diff --git a/src/ol/format/gml3.js b/src/ol/format/gml3.js
index 85eef013fd..6a3542e177 100644
--- a/src/ol/format/gml3.js
+++ b/src/ol/format/gml3.js
@@ -576,6 +576,8 @@ ol.format.GML3.prototype.SEGMENTS_PARSERS_ = {
 ol.format.GML3.prototype.writePos_ = function(node, value, objectStack) {
   var context = objectStack[objectStack.length - 1];
   var hasZ = context['hasZ'];
+  var srsDimension = hasZ ? 3 : 2;
+  node.setAttribute('srsDimension', srsDimension);
   var srsName = context['srsName'];
   var axisOrientation = 'enu';
   if (srsName) {
@@ -632,6 +634,8 @@ ol.format.GML3.prototype.getCoords_ = function(point, opt_srsName, opt_hasZ) {
 ol.format.GML3.prototype.writePosList_ = function(node, value, objectStack) {
   var context = objectStack[objectStack.length - 1];
   var hasZ = context['hasZ'];
+  var srsDimension = hasZ ? 3 : 2;
+  node.setAttribute('srsDimension', srsDimension);
   var srsName = context['srsName'];
   // only 2d for simple features profile
   var points = value.getCoordinates();
diff --git a/test/spec/ol/format/gml.test.js b/test/spec/ol/format/gml.test.js
index 1e9eb6595a..cd6bf81a31 100644
--- a/test/spec/ol/format/gml.test.js
+++ b/test/spec/ol/format/gml.test.js
@@ -354,7 +354,7 @@ describe('ol.format.GML3', function() {
         var text =
             '<gml:Point xmlns:gml="http://www.opengis.net/gml" ' +
             '    srsName="CRS:84">' +
-            '  <gml:pos>1 2</gml:pos>' +
+            '  <gml:pos srsDimension="2">1 2</gml:pos>' +
             '</gml:Point>';
         var g = readGeometry(format, text);
         expect(g).to.be.an(ol.geom.Point);
@@ -424,7 +424,7 @@ describe('ol.format.GML3', function() {
         var text =
             '<gml:Point xmlns:gml="http://www.opengis.net/gml" ' +
             '    srsName="urn:x-ogc:def:crs:EPSG:4326">' +
-            '  <gml:pos>2 1</gml:pos>' +
+            '  <gml:pos srsDimension="2">2 1</gml:pos>' +
             '</gml:Point>';
         var g = readGeometry(formatWGS84, text);
         expect(g).to.be.an(ol.geom.Point);
@@ -441,7 +441,7 @@ describe('ol.format.GML3', function() {
         var text =
             '<gml:LineString xmlns:gml="http://www.opengis.net/gml" ' +
             '    srsName="CRS:84">' +
-            '  <gml:posList>1 2 3 4</gml:posList>' +
+            '  <gml:posList srsDimension="2">1 2 3 4</gml:posList>' +
             '</gml:LineString>';
         var g = readGeometry(format, text);
         expect(g).to.be.an(ol.geom.LineString);
@@ -480,7 +480,7 @@ describe('ol.format.GML3', function() {
         var text =
             '<gml:LineString xmlns:gml="http://www.opengis.net/gml" ' +
             '    srsName="urn:x-ogc:def:crs:EPSG:4326">' +
-            '  <gml:posList>2 1 4 3</gml:posList>' +
+            '  <gml:posList srsDimension="2">2 1 4 3</gml:posList>' +
             '</gml:LineString>';
         var g = readGeometry(formatWGS84, text);
         expect(g).to.be.an(ol.geom.LineString);
@@ -499,7 +499,7 @@ describe('ol.format.GML3', function() {
         var text =
                 '<gml:LineString xmlns:gml="http://www.opengis.net/gml" ' +
                 '    srsName="urn:x-ogc:def:crs:EPSG:4326">' +
-                '  <gml:posList>-90 -180 90 180</gml:posList>' +
+                ' <gml:posList srsDimension="2">-90 -180 90 180</gml:posList>' +
                 '</gml:LineString>';
         var g = readGeometry(format, text);
         expect(g).to.be.an(ol.geom.LineString);
@@ -513,7 +513,7 @@ describe('ol.format.GML3', function() {
             var text =
                 '<gml:Point xmlns:gml="http://www.opengis.net/gml" ' +
                 '    srsName="urn:x-ogc:def:crs:EPSG:4326">' +
-                '  <gml:pos>-90 -180</gml:pos>' +
+                '  <gml:pos srsDimension="2">-90 -180</gml:pos>' +
                 '</gml:Point>';
             var g = readGeometry(format, text);
             expect(g).to.be.an(ol.geom.Point);
@@ -532,7 +532,8 @@ describe('ol.format.GML3', function() {
                 '      <gml:exterior>' +
                 '        <gml:LinearRing srsName=' +
                 '          "urn:x-ogc:def:crs:EPSG:4326">' +
-                '          <gml:posList>38.9661 -77.0081 38.9931 -77.0421 ' +
+                '          <gml:posList srsDimension="2">' +
+                '          38.9661 -77.0081 38.9931 -77.0421 ' +
                 '          38.9321 -77.1221 38.9151 -77.0781 38.8861 ' +
                 '          -77.0671 38.8621 -77.0391 38.8381 -77.0401 ' +
                 '          38.8291 -77.0451 38.8131 -77.0351 38.7881 ' +
@@ -576,7 +577,7 @@ describe('ol.format.GML3', function() {
         var text =
             '<gml:LinearRing xmlns:gml="http://www.opengis.net/gml" ' +
             '    srsName="CRS:84">' +
-            '  <gml:posList>1 2 3 4 5 6 1 2</gml:posList>' +
+            '  <gml:posList srsDimension="2">1 2 3 4 5 6 1 2</gml:posList>' +
             '</gml:LinearRing>';
         var g = readGeometry(format, text);
         expect(g).to.be.an(ol.geom.LinearRing);
@@ -596,17 +597,17 @@ describe('ol.format.GML3', function() {
             '    srsName="CRS:84">' +
             '  <gml:exterior>' +
             '    <gml:LinearRing srsName="CRS:84">' +
-            '      <gml:posList>1 2 3 2 3 4 1 2</gml:posList>' +
+            '     <gml:posList srsDimension="2">1 2 3 2 3 4 1 2</gml:posList>' +
             '    </gml:LinearRing>' +
             '  </gml:exterior>' +
             '  <gml:interior>' +
             '    <gml:LinearRing srsName="CRS:84">' +
-            '      <gml:posList>2 3 2 5 4 5 2 3</gml:posList>' +
+            '     <gml:posList srsDimension="2">2 3 2 5 4 5 2 3</gml:posList>' +
             '    </gml:LinearRing>' +
             '  </gml:interior>' +
             '  <gml:interior>' +
             '    <gml:LinearRing srsName="CRS:84">' +
-            '      <gml:posList>3 4 3 6 5 6 3 4</gml:posList>' +
+            '     <gml:posList srsDimension="2">3 4 3 6 5 6 3 4</gml:posList>' +
             '    </gml:LinearRing>' +
             '  </gml:interior>' +
             '</gml:Polygon>';
@@ -631,17 +632,23 @@ describe('ol.format.GML3', function() {
             '    <gml:PolygonPatch>' +
             '      <gml:exterior>' +
             '        <gml:LinearRing srsName="CRS:84">' +
-            '          <gml:posList>1 2 3 2 3 4 1 2</gml:posList>' +
+            '          <gml:posList srsDimension="2">' +
+            '            1 2 3 2 3 4 1 2' +
+            '          </gml:posList>' +
             '        </gml:LinearRing>' +
             '      </gml:exterior>' +
             '      <gml:interior>' +
             '        <gml:LinearRing srsName="CRS:84">' +
-            '          <gml:posList>2 3 2 5 4 5 2 3</gml:posList>' +
+            '          <gml:posList srsDimension="2">' +
+            '            2 3 2 5 4 5 2 3' +
+            '          </gml:posList>' +
             '        </gml:LinearRing>' +
             '      </gml:interior>' +
             '      <gml:interior>' +
             '        <gml:LinearRing srsName="CRS:84">' +
-            '          <gml:posList>3 4 3 6 5 6 3 4</gml:posList>' +
+            '          <gml:posList srsDimension="2">' +
+            '            3 4 3 6 5 6 3 4' +
+            '          </gml:posList>' +
             '        </gml:LinearRing>' +
             '      </gml:interior>' +
             '    </gml:PolygonPatch>' +
@@ -667,7 +674,7 @@ describe('ol.format.GML3', function() {
             '    srsName="CRS:84">' +
             '  <gml:segments>' +
             '    <gml:LineStringSegment>' +
-            '      <gml:posList>1 2 3 4</gml:posList>' +
+            '      <gml:posList srsDimension="2">1 2 3 4</gml:posList>' +
             '    </gml:LineStringSegment>' +
             '  </gml:segments>' +
             '</gml:Curve>';
@@ -704,17 +711,17 @@ describe('ol.format.GML3', function() {
             '    srsName="CRS:84">' +
             '  <gml:pointMember>' +
             '    <gml:Point srsName="CRS:84">' +
-            '      <gml:pos>1 2</gml:pos>' +
+            '      <gml:pos srsDimension="2">1 2</gml:pos>' +
             '    </gml:Point>' +
             '  </gml:pointMember>' +
             '  <gml:pointMember>' +
             '    <gml:Point srsName="CRS:84">' +
-            '      <gml:pos>2 3</gml:pos>' +
+            '      <gml:pos srsDimension="2">2 3</gml:pos>' +
             '    </gml:Point>' +
             '  </gml:pointMember>' +
             '  <gml:pointMember>' +
             '    <gml:Point srsName="CRS:84">' +
-            '      <gml:pos>3 4</gml:pos>' +
+            '      <gml:pos srsDimension="2">3 4</gml:pos>' +
             '    </gml:Point>' +
             '  </gml:pointMember>' +
             '</gml:MultiPoint>';
@@ -756,12 +763,12 @@ describe('ol.format.GML3', function() {
             '    srsName="CRS:84">' +
             '  <gml:lineStringMember>' +
             '    <gml:LineString srsName="CRS:84">' +
-            '      <gml:posList>1 2 2 3</gml:posList>' +
+            '      <gml:posList srsDimension="2">1 2 2 3</gml:posList>' +
             '    </gml:LineString>' +
             '  </gml:lineStringMember>' +
             '  <gml:lineStringMember>' +
             '    <gml:LineString srsName="CRS:84">' +
-            '      <gml:posList>3 4 4 5</gml:posList>' +
+            '      <gml:posList srsDimension="2">3 4 4 5</gml:posList>' +
             '    </gml:LineString>' +
             '  </gml:lineStringMember>' +
             '</gml:MultiLineString>';
@@ -805,17 +812,23 @@ describe('ol.format.GML3', function() {
             '    <gml:Polygon srsName="CRS:84">' +
             '      <gml:exterior>' +
             '        <gml:LinearRing srsName="CRS:84">' +
-            '          <gml:posList>1 2 3 2 3 4 1 2</gml:posList>' +
+            '          <gml:posList srsDimension="2">' +
+            '            1 2 3 2 3 4 1 2' +
+            '          </gml:posList>' +
             '        </gml:LinearRing>' +
             '      </gml:exterior>' +
             '      <gml:interior>' +
             '        <gml:LinearRing srsName="CRS:84">' +
-            '          <gml:posList>2 3 2 5 4 5 2 3</gml:posList>' +
+            '          <gml:posList srsDimension="2">' +
+            '            2 3 2 5 4 5 2 3' +
+            '          </gml:posList>' +
             '        </gml:LinearRing>' +
             '      </gml:interior>' +
             '      <gml:interior>' +
             '        <gml:LinearRing srsName="CRS:84">' +
-            '          <gml:posList>3 4 3 6 5 6 3 4</gml:posList>' +
+            '          <gml:posList srsDimension="2">' +
+            '            3 4 3 6 5 6 3 4' +
+            '          </gml:posList>' +
             '        </gml:LinearRing>' +
             '      </gml:interior>' +
             '    </gml:Polygon>' +
@@ -824,7 +837,9 @@ describe('ol.format.GML3', function() {
             '    <gml:Polygon srsName="CRS:84">' +
             '      <gml:exterior>' +
             '        <gml:LinearRing srsName="CRS:84">' +
-            '          <gml:posList>1 2 3 2 3 4 1 2</gml:posList>' +
+            '          <gml:posList srsDimension="2">' +
+            '            1 2 3 2 3 4 1 2' +
+            '          </gml:posList>' +
             '        </gml:LinearRing>' +
             '      </gml:exterior>' +
             '    </gml:Polygon>' +
@@ -893,12 +908,12 @@ describe('ol.format.GML3', function() {
                 '    srsName="CRS:84">' +
                 '  <gml:curveMember>' +
                 '    <gml:LineString srsName="CRS:84">' +
-                '      <gml:posList>1 2 2 3</gml:posList>' +
+                '      <gml:posList srsDimension="2">1 2 2 3</gml:posList>' +
                 '    </gml:LineString>' +
                 '  </gml:curveMember>' +
                 '  <gml:curveMember>' +
                 '    <gml:LineString srsName="CRS:84">' +
-                '      <gml:posList>3 4 4 5</gml:posList>' +
+                '      <gml:posList srsDimension="2">3 4 4 5</gml:posList>' +
                 '    </gml:LineString>' +
                 '  </gml:curveMember>' +
                 '</gml:MultiCurve>';
@@ -918,7 +933,7 @@ describe('ol.format.GML3', function() {
             '    <gml:Curve srsName="CRS:84">' +
             '      <gml:segments>' +
             '        <gml:LineStringSegment>' +
-            '          <gml:posList>1 2 2 3</gml:posList>' +
+            '          <gml:posList srsDimension="2">1 2 2 3</gml:posList>' +
             '        </gml:LineStringSegment>' +
             '      </gml:segments>' +
             '    </gml:Curve>' +
@@ -927,7 +942,7 @@ describe('ol.format.GML3', function() {
             '    <gml:Curve srsName="CRS:84">' +
             '      <gml:segments>' +
             '        <gml:LineStringSegment>' +
-            '          <gml:posList>3 4 4 5</gml:posList>' +
+            '          <gml:posList srsDimension="2">3 4 4 5</gml:posList>' +
             '        </gml:LineStringSegment>' +
             '      </gml:segments>' +
             '    </gml:Curve>' +
@@ -954,17 +969,23 @@ describe('ol.format.GML3', function() {
             '    <gml:Polygon srsName="CRS:84">' +
             '      <gml:exterior>' +
             '        <gml:LinearRing srsName="CRS:84">' +
-            '          <gml:posList>1 2 3 2 3 4 1 2</gml:posList>' +
+            '          <gml:posList srsDimension="2">' +
+            '            1 2 3 2 3 4 1 2' +
+            '          </gml:posList>' +
             '        </gml:LinearRing>' +
             '      </gml:exterior>' +
             '      <gml:interior>' +
             '        <gml:LinearRing srsName="CRS:84">' +
-            '          <gml:posList>2 3 2 5 4 5 2 3</gml:posList>' +
+            '          <gml:posList srsDimension="2">' +
+            '            2 3 2 5 4 5 2 3' +
+            '          </gml:posList>' +
             '        </gml:LinearRing>' +
             '      </gml:interior>' +
             '      <gml:interior>' +
             '        <gml:LinearRing srsName="CRS:84">' +
-            '          <gml:posList>3 4 3 6 5 6 3 4</gml:posList>' +
+            '          <gml:posList srsDimension="2">' +
+            '            3 4 3 6 5 6 3 4' +
+            '          </gml:posList>' +
             '        </gml:LinearRing>' +
             '      </gml:interior>' +
             '    </gml:Polygon>' +
@@ -973,7 +994,9 @@ describe('ol.format.GML3', function() {
             '    <gml:Polygon srsName="CRS:84">' +
             '      <gml:exterior>' +
             '        <gml:LinearRing srsName="CRS:84">' +
-            '          <gml:posList>1 2 3 2 3 4 1 2</gml:posList>' +
+            '          <gml:posList srsDimension="2">' +
+            '            1 2 3 2 3 4 1 2' +
+            '          </gml:posList>' +
             '        </gml:LinearRing>' +
             '      </gml:exterior>' +
             '    </gml:Polygon>' +
@@ -1042,17 +1065,23 @@ describe('ol.format.GML3', function() {
             '        <gml:PolygonPatch>' +
             '          <gml:exterior>' +
             '            <gml:LinearRing srsName="CRS:84">' +
-            '              <gml:posList>1 2 3 2 3 4 1 2</gml:posList>' +
+            '              <gml:posList srsDimension="2">' +
+            '                1 2 3 2 3 4 1 2' +
+            '              </gml:posList>' +
             '            </gml:LinearRing>' +
             '          </gml:exterior>' +
             '          <gml:interior>' +
             '            <gml:LinearRing srsName="CRS:84">' +
-            '              <gml:posList>2 3 2 5 4 5 2 3</gml:posList>' +
+            '              <gml:posList srsDimension="2">' +
+            '                2 3 2 5 4 5 2 3' +
+            '              </gml:posList>' +
             '            </gml:LinearRing>' +
             '          </gml:interior>' +
             '          <gml:interior>' +
             '            <gml:LinearRing srsName="CRS:84">' +
-            '              <gml:posList>3 4 3 6 5 6 3 4</gml:posList>' +
+            '              <gml:posList srsDimension="2">' +
+            '                3 4 3 6 5 6 3 4' +
+            '              </gml:posList>' +
             '            </gml:LinearRing>' +
             '          </gml:interior>' +
             '        </gml:PolygonPatch>' +
@@ -1065,7 +1094,9 @@ describe('ol.format.GML3', function() {
             '        <gml:PolygonPatch>' +
             '          <gml:exterior>' +
             '            <gml:LinearRing srsName="CRS:84">' +
-            '              <gml:posList>1 2 3 2 3 4 1 2</gml:posList>' +
+            '              <gml:posList srsDimension="2">' +
+            '                1 2 3 2 3 4 1 2' +
+            '              </gml:posList>' +
             '            </gml:LinearRing>' +
             '          </gml:exterior>' +
             '        </gml:PolygonPatch>' +
diff --git a/test/spec/ol/format/gml/topp-states-gml.xml b/test/spec/ol/format/gml/topp-states-gml.xml
index 2090909512..3919cf8c13 100644
--- a/test/spec/ol/format/gml/topp-states-gml.xml
+++ b/test/spec/ol/format/gml/topp-states-gml.xml
@@ -10,7 +10,7 @@
                     <gml:Polygon srsName="urn:x-ogc:def:crs:EPSG:4326">
                         <gml:exterior>
                             <gml:LinearRing srsName="urn:x-ogc:def:crs:EPSG:4326">
-                                <gml:posList>37.5101 -88.0711 37.5831 -88.1341 37.6281 -88.1571
+                                <gml:posList srsDimension="2">37.5101 -88.0711 37.5831 -88.1341 37.6281 -88.1571
                                     37.6601 -88.1591 37.7001 -88.1331 37.7351 -88.0721 37.8051
                                     -88.0351 37.8171 -88.0861 37.8311 -88.0891 37.8271 -88.0421
                                     37.8431 -88.0341 37.8671 -88.0751 37.8951 -88.1011 37.9061
@@ -141,7 +141,7 @@
                     <gml:Polygon srsName="urn:x-ogc:def:crs:EPSG:4326">
                         <gml:exterior>
                             <gml:LinearRing srsName="urn:x-ogc:def:crs:EPSG:4326">
-                                <gml:posList>38.9661 -77.0081 38.9931 -77.0421 38.9321 -77.1221
+                                <gml:posList srsDimension="2">38.9661 -77.0081 38.9931 -77.0421 38.9321 -77.1221
                                     38.9151 -77.0781 38.8861 -77.0671 38.8621 -77.0391 38.8381
                                     -77.0401 38.8291 -77.0451 38.8131 -77.0351 38.7881 -77.0451
                                     38.8891 -76.9111 38.9661 -77.0081</gml:posList>
@@ -182,7 +182,7 @@
                     <gml:Polygon srsName="urn:x-ogc:def:crs:EPSG:4326">
                         <gml:exterior>
                             <gml:LinearRing srsName="urn:x-ogc:def:crs:EPSG:4326">
-                                <gml:posList>38.5571 -75.7071 38.4631 -75.6991 38.4551 -75.3501
+                                <gml:posList srsDimension="2">38.5571 -75.7071 38.4631 -75.6991 38.4551 -75.3501
                                     38.4501 -75.0931 38.4491 -75.0681 38.4491 -75.0451 38.7991
                                     -75.0831 38.8081 -75.1901 38.9451 -75.3071 39.0121 -75.3241
                                     39.0731 -75.3971 39.2571 -75.4021 39.3661 -75.5151 39.4631
@@ -230,7 +230,7 @@
                     <gml:Polygon srsName="urn:x-ogc:def:crs:EPSG:4326">
                         <gml:exterior>
                             <gml:LinearRing srsName="urn:x-ogc:def:crs:EPSG:4326">
-                                <gml:posList>38.4801 -79.2311 38.6581 -79.1271 38.6631 -79.1211
+                                <gml:posList srsDimension="2">38.4801 -79.2311 38.6581 -79.1271 38.6631 -79.1211
                                     38.6591 -79.0881 38.7071 -79.0871 38.7611 -79.0561 38.7901
                                     -79.0551 38.7991 -79.0331 38.8461 -78.9871 38.7631 -78.8661
                                     38.8331 -78.8161 38.8801 -78.7931 38.9111 -78.7491 38.9291
@@ -381,7 +381,7 @@
                     <gml:Polygon srsName="urn:x-ogc:def:crs:EPSG:4326">
                         <gml:exterior>
                             <gml:LinearRing srsName="urn:x-ogc:def:crs:EPSG:4326">
-                                <gml:posList>38.6491 -75.7111 38.8301 -75.7241 39.1411 -75.7521
+                                <gml:posList srsDimension="2">38.6491 -75.7111 38.8301 -75.7241 39.1411 -75.7521
                                     39.2471 -75.7611 39.2951 -75.7641 39.3831 -75.7721 39.7231
                                     -75.7911 39.7221 -76.1391 39.7211 -76.2331 39.7201 -76.5701
                                     39.7211 -76.7901 39.7201 -76.9971 39.7201 -77.2211 39.7191
@@ -459,7 +459,7 @@
                     <gml:Polygon srsName="urn:x-ogc:def:crs:EPSG:4326">
                         <gml:exterior>
                             <gml:LinearRing srsName="urn:x-ogc:def:crs:EPSG:4326">
-                                <gml:posList>38.9071 -76.2931 38.9491 -76.2731 38.9231 -76.2461
+                                <gml:posList srsDimension="2">38.9071 -76.2931 38.9491 -76.2731 38.9231 -76.2461
                                     38.9781 -76.2481 39.0401 -76.2991 38.9581 -76.3561 38.8541
                                     -76.3751 38.8751 -76.3291 38.9241 -76.3421 38.9121 -76.3221
                                     38.9411 -76.3141 38.9561 -76.3391 38.9671 -76.2941 38.9071
@@ -472,7 +472,7 @@
                     <gml:Polygon srsName="urn:x-ogc:def:crs:EPSG:4326">
                         <gml:exterior>
                             <gml:LinearRing srsName="urn:x-ogc:def:crs:EPSG:4326">
-                                <gml:posList>38.4491 -75.0681 38.3221 -75.0871 38.4491 -75.0451
+                                <gml:posList srsDimension="2">38.4491 -75.0681 38.3221 -75.0871 38.4491 -75.0451
                                     38.4491 -75.0681</gml:posList>
                             </gml:LinearRing>
                         </gml:exterior>
@@ -482,7 +482,7 @@
                     <gml:Polygon srsName="urn:x-ogc:def:crs:EPSG:4326">
                         <gml:exterior>
                             <gml:LinearRing srsName="urn:x-ogc:def:crs:EPSG:4326">
-                                <gml:posList>38.0271 -75.2701 38.0281 -75.2421 38.1241 -75.1731
+                                <gml:posList srsDimension="2">38.0271 -75.2701 38.0281 -75.2421 38.1241 -75.1731
                                     38.3201 -75.0941 38.2041 -75.1641 38.0941 -75.2091 38.0371
                                     -75.2441 38.0271 -75.2701</gml:posList>
                             </gml:LinearRing>
@@ -522,7 +522,7 @@
                     <gml:Polygon srsName="urn:x-ogc:def:crs:EPSG:4326">
                         <gml:exterior>
                             <gml:LinearRing srsName="urn:x-ogc:def:crs:EPSG:4326">
-                                <gml:posList>37.6411 -102.0431 37.7341 -102.0431 38.2531 -102.0451
+                                <gml:posList srsDimension="2">37.6411 -102.0431 37.7341 -102.0431 38.2531 -102.0451
                                     38.2631 -102.0451 38.6151 -102.0471 38.6921 -102.0471 39.0361
                                     -102.0481 39.1261 -102.0471 39.5621 -102.0481 39.5681 -102.0481
                                     39.9981 -102.0511 40.3421 -102.0471 40.4311 -102.0471 40.6971
@@ -576,7 +576,7 @@
                     <gml:Polygon srsName="urn:x-ogc:def:crs:EPSG:4326">
                         <gml:exterior>
                             <gml:LinearRing srsName="urn:x-ogc:def:crs:EPSG:4326">
-                                <gml:posList>36.6551 -86.5101 36.6501 -86.4151 36.6431 -86.1991
+                                <gml:posList srsDimension="2">36.6551 -86.5101 36.6501 -86.4151 36.6431 -86.1991
                                     36.6331 -85.9801 36.6261 -85.7851 36.6181 -85.4371 36.6261
                                     -85.3001 36.6251 -85.2721 36.6201 -84.9981 36.6051 -84.7911
                                     36.6051 -84.7811 36.5951 -84.2561 36.5951 -84.2541 36.5921
@@ -684,7 +684,7 @@
                     <gml:Polygon srsName="urn:x-ogc:def:crs:EPSG:4326">
                         <gml:exterior>
                             <gml:LinearRing srsName="urn:x-ogc:def:crs:EPSG:4326">
-                                <gml:posList>36.4981 -89.5331 36.4981 -89.4751 36.5041 -89.4811
+                                <gml:posList srsDimension="2">36.4981 -89.5331 36.4981 -89.4751 36.5041 -89.4811
                                     36.5251 -89.4711 36.5471 -89.4811 36.5591 -89.4931 36.5641
                                     -89.5301 36.5571 -89.5561 36.5411 -89.5681 36.5181 -89.5661
                                     36.4981 -89.5331</gml:posList>
@@ -725,7 +725,7 @@
                     <gml:Polygon srsName="urn:x-ogc:def:crs:EPSG:4326">
                         <gml:exterior>
                             <gml:LinearRing srsName="urn:x-ogc:def:crs:EPSG:4326">
-                                <gml:posList>37.0011 -95.0711 37.0001 -95.0321 36.9961 -94.6201
+                                <gml:posList srsDimension="2">37.0011 -95.0711 37.0001 -95.0321 36.9961 -94.6201
                                     37.0601 -94.6201 37.3271 -94.6181 37.3601 -94.6181 37.6501
                                     -94.6181 37.6791 -94.6191 38.0301 -94.6161 38.0551 -94.6171
                                     38.3921 -94.6181 38.4711 -94.6181 38.7371 -94.6121 38.8371
@@ -798,7 +798,7 @@
                     <gml:Polygon srsName="urn:x-ogc:def:crs:EPSG:4326">
                         <gml:exterior>
                             <gml:LinearRing srsName="urn:x-ogc:def:crs:EPSG:4326">
-                                <gml:posList>36.5461 -79.1441 36.5431 -78.7961 36.5461 -78.7371
+                                <gml:posList srsDimension="2">36.5461 -79.1441 36.5431 -78.7961 36.5461 -78.7371
                                     36.5411 -78.4581 36.5451 -78.3211 36.5521 -78.0511 36.5521
                                     -77.8981 36.5531 -77.7631 36.5531 -77.3201 36.5561 -77.1771
                                     36.5541 -76.9241 36.5541 -76.9211 36.5551 -76.5631 36.5551
@@ -910,7 +910,7 @@
                     <gml:Polygon srsName="urn:x-ogc:def:crs:EPSG:4326">
                         <gml:exterior>
                             <gml:LinearRing srsName="urn:x-ogc:def:crs:EPSG:4326">
-                                <gml:posList>38.0271 -75.2701 37.9181 -75.3461 37.9001 -75.3781
+                                <gml:posList srsDimension="2">38.0271 -75.2701 37.9181 -75.3461 37.9001 -75.3781
                                     37.9011 -75.3441 37.8751 -75.3861 37.8881 -75.3391 37.9621
                                     -75.2981 38.0281 -75.2421 38.0271 -75.2701</gml:posList>
                             </gml:LinearRing>
@@ -921,7 +921,7 @@
                     <gml:Polygon srsName="urn:x-ogc:def:crs:EPSG:4326">
                         <gml:exterior>
                             <gml:LinearRing srsName="urn:x-ogc:def:crs:EPSG:4326">
-                                <gml:posList>37.5521 -75.8671 37.5561 -75.9301 37.5211 -75.9541
+                                <gml:posList srsDimension="2">37.5521 -75.8671 37.5561 -75.9301 37.5211 -75.9541
                                     37.4791 -75.9651 37.4841 -75.9341 37.3081 -76.0181 37.1261
                                     -75.9701 37.1421 -75.9311 37.3671 -75.8971 37.4181 -75.8261
                                     37.4081 -75.7901 37.4261 -75.8201 37.4691 -75.8131 37.4931
@@ -968,7 +968,7 @@
                     <gml:Polygon srsName="urn:x-ogc:def:crs:EPSG:4326">
                         <gml:exterior>
                             <gml:LinearRing srsName="urn:x-ogc:def:crs:EPSG:4326">
-                                <gml:posList>36.9531 -89.1041 36.9771 -89.1071 36.9881 -89.1291
+                                <gml:posList srsDimension="2">36.9531 -89.1041 36.9771 -89.1071 36.9881 -89.1291
                                     36.9861 -89.1931 37.0281 -89.2101 37.0411 -89.2371 37.0871
                                     -89.2641 37.0911 -89.2841 37.0851 -89.3031 37.0601 -89.3091
                                     37.0271 -89.2641 37.0081 -89.2621 36.9991 -89.2821 37.0091
diff --git a/test/spec/ol/format/wfs.test.js b/test/spec/ol/format/wfs.test.js
index d1b43ec3f9..b6488262fe 100644
--- a/test/spec/ol/format/wfs.test.js
+++ b/test/spec/ol/format/wfs.test.js
@@ -525,7 +525,7 @@ describe('ol.format.WFS', function() {
           '      <gml:Polygon xmlns:gml="http://www.opengis.net/gml">' +
           '        <gml:exterior>' +
           '          <gml:LinearRing>' +
-          '            <gml:posList>' +
+          '            <gml:posList srsDimension="2">' +
           '              10 20 10 25 15 25 15 20 10 20' +
           '            </gml:posList>' +
           '          </gml:LinearRing>' +
@@ -562,7 +562,7 @@ describe('ol.format.WFS', function() {
           '      <gml:Polygon xmlns:gml="http://www.opengis.net/gml">' +
           '        <gml:exterior>' +
           '          <gml:LinearRing>' +
-          '            <gml:posList>' +
+          '            <gml:posList srsDimension="2">' +
           '              10 20 10 25 15 25 15 20 10 20' +
           '            </gml:posList>' +
           '          </gml:LinearRing>' +
diff --git a/test/spec/ol/format/wfs/TransactionMulti.xml b/test/spec/ol/format/wfs/TransactionMulti.xml
index 1154cb38c0..a9b1953080 100644
--- a/test/spec/ol/format/wfs/TransactionMulti.xml
+++ b/test/spec/ol/format/wfs/TransactionMulti.xml
@@ -5,7 +5,7 @@
                 <gml:MultiPoint xmlns:gml="http://www.opengis.net/gml">
                     <gml:pointMember>
                         <gml:Point>
-                            <gml:pos>1 2</gml:pos>
+                            <gml:pos srsDimension="2">1 2</gml:pos>
                         </gml:Point>
                     </gml:pointMember>
                 </gml:MultiPoint>
@@ -20,7 +20,7 @@
                 <gml:MultiPoint xmlns:gml="http://www.opengis.net/gml">
                     <gml:pointMember>
                         <gml:Point>
-                            <gml:pos>1 2</gml:pos>
+                            <gml:pos srsDimension="2">1 2</gml:pos>
                         </gml:Point>
                     </gml:pointMember>
                 </gml:MultiPoint>
diff --git a/test/spec/ol/format/wfs/TransactionMulti_3D.xml b/test/spec/ol/format/wfs/TransactionMulti_3D.xml
index cb0ab3dd31..a630e78d95 100644
--- a/test/spec/ol/format/wfs/TransactionMulti_3D.xml
+++ b/test/spec/ol/format/wfs/TransactionMulti_3D.xml
@@ -5,7 +5,7 @@
                 <gml:MultiPoint xmlns:gml="http://www.opengis.net/gml">
                     <gml:pointMember>
                         <gml:Point>
-                            <gml:pos>1 2 3</gml:pos>
+                            <gml:pos srsDimension="3">1 2 3</gml:pos>
                         </gml:Point>
                     </gml:pointMember>
                 </gml:MultiPoint>
@@ -20,7 +20,7 @@
                 <gml:MultiPoint xmlns:gml="http://www.opengis.net/gml">
                     <gml:pointMember>
                         <gml:Point>
-                            <gml:pos>1 2 3</gml:pos>
+                            <gml:pos srsDimension="3">1 2 3</gml:pos>
                         </gml:Point>
                     </gml:pointMember>
                 </gml:MultiPoint>
diff --git a/test/spec/ol/format/wfs/TransactionSrs.xml b/test/spec/ol/format/wfs/TransactionSrs.xml
index 14d109046e..ed409a59a0 100644
--- a/test/spec/ol/format/wfs/TransactionSrs.xml
+++ b/test/spec/ol/format/wfs/TransactionSrs.xml
@@ -1 +1 @@
-<wfs:Transaction xmlns:wfs="http://www.opengis.net/wfs" service="WFS" version="1.1.0" xsi:schemaLocation="http://www.opengis.net/wfs http://schemas.opengis.net/wfs/1.1.0/wfs.xsd" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"><wfs:Insert><feature:FAULTS xmlns:feature="http://foo"><feature:the_geom><gml:MultiCurve xmlns:gml="http://www.opengis.net/gml" srsName="EPSG:900913"><gml:curveMember><gml:LineString srsName="EPSG:900913"><gml:posList>-5178372.1885436 1992365.7775042 -4434792.7774889 1601008.1927386 -4043435.1927233 2148908.8114105</gml:posList></gml:LineString></gml:curveMember></gml:MultiCurve></feature:the_geom><feature:TYPE>xyz</feature:TYPE></feature:FAULTS></wfs:Insert></wfs:Transaction>
+<wfs:Transaction xmlns:wfs="http://www.opengis.net/wfs" service="WFS" version="1.1.0" xsi:schemaLocation="http://www.opengis.net/wfs http://schemas.opengis.net/wfs/1.1.0/wfs.xsd" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"><wfs:Insert><feature:FAULTS xmlns:feature="http://foo"><feature:the_geom><gml:MultiCurve xmlns:gml="http://www.opengis.net/gml" srsName="EPSG:900913"><gml:curveMember><gml:LineString srsName="EPSG:900913"><gml:posList srsDimension="2">-5178372.1885436 1992365.7775042 -4434792.7774889 1601008.1927386 -4043435.1927233 2148908.8114105</gml:posList></gml:LineString></gml:curveMember></gml:MultiCurve></feature:the_geom><feature:TYPE>xyz</feature:TYPE></feature:FAULTS></wfs:Insert></wfs:Transaction>
diff --git a/test/spec/ol/format/wfs/TransactionUpdate.xml b/test/spec/ol/format/wfs/TransactionUpdate.xml
index 9155d91dfe..7f3df0ba1f 100644
--- a/test/spec/ol/format/wfs/TransactionUpdate.xml
+++ b/test/spec/ol/format/wfs/TransactionUpdate.xml
@@ -8,7 +8,7 @@
             <Value><MultiLineString xmlns="http://www.opengis.net/gml" srsName="EPSG:900913">
                     <lineStringMember>
                         <LineString srsName="EPSG:900913">
-                            <posList>-12279454 6741885 -12064207
+                            <posList srsDimension="2">-12279454 6741885 -12064207
                                 6732101 -11941908 6595126
                                 -12240318 6507071 -12416429
                                 6604910</posList>
diff --git a/test/spec/ol/format/wfs/TransactionUpdateMultiGeoms.xml b/test/spec/ol/format/wfs/TransactionUpdateMultiGeoms.xml
index a65488f311..e3ba54552f 100644
--- a/test/spec/ol/format/wfs/TransactionUpdateMultiGeoms.xml
+++ b/test/spec/ol/format/wfs/TransactionUpdateMultiGeoms.xml
@@ -8,7 +8,7 @@
         <MultiLineString xmlns="http://www.opengis.net/gml" srsName="EPSG:900913">
           <lineStringMember>
             <LineString srsName="EPSG:900913">
-              <posList>-12279454 6741885 -12064207
+              <posList srsDimension="2">-12279454 6741885 -12064207
                 6732101 -11941908 6595126
                 -12240318 6507071 -12416429
                 6604910</posList>
@@ -20,7 +20,7 @@
         <MultiLineString xmlns="http://www.opengis.net/gml" srsName="EPSG:900913">
           <lineStringMember>
             <LineString srsName="EPSG:900913">
-              <posList>-12000000 6700000 -12000001 6700001 -12000002 6700002</posList>
+              <posList srsDimension="2">-12000000 6700000 -12000001 6700001 -12000002 6700002</posList>
             </LineString>
           </lineStringMember>
         </MultiLineString>