diff --git a/src/objectliterals.exports b/src/objectliterals.exports
index 65a5fc33e6..5a309eca7b 100644
--- a/src/objectliterals.exports
+++ b/src/objectliterals.exports
@@ -160,3 +160,8 @@
 @exportObjectLiteralProperty ol.ProjectionOptions.extent ol.Extent
 @exportObjectLiteralProperty ol.ProjectionOptions.axisOrientation string|undefined
 @exportObjectLiteralProperty ol.ProjectionOptions.global boolean|undefined
+
+@exportObjectLiteral ol.Proj4jsProjectionOptions
+@exportObjectLiteralProperty ol.Proj4jsProjectionOptions.code string
+@exportObjectLiteralProperty ol.Proj4jsProjectionOptions.extent ol.Extent
+@exportObjectLiteralProperty ol.Proj4jsProjectionOptions.global boolean|undefined
diff --git a/src/ol/projection.js b/src/ol/projection.js
index ec38f9773c..859ae9960e 100644
--- a/src/ol/projection.js
+++ b/src/ol/projection.js
@@ -175,20 +175,21 @@ ol.Projection.prototype.setDefaultTileGrid = function(tileGrid) {
 /**
  * @constructor
  * @extends {ol.Projection}
- * @param {string} code Code.
  * @param {Proj4js.Proj} proj4jsProj Proj4js projection.
+ * @param {ol.Proj4jsProjectionOptions} options Projection config options.
  * @private
  */
-ol.Proj4jsProjection_ = function(code, proj4jsProj) {
+ol.Proj4jsProjection_ = function(proj4jsProj, options) {
 
   var units = /** @type {ol.ProjectionUnits} */ (proj4jsProj.units);
 
-  goog.base(this, {
-    code: code,
+  var config = /** @type {ol.ProjectionOptions} */ ({
     units: units,
-    extent: null,
     axisOrientation: proj4jsProj.axis
   });
+  goog.object.extend(config, options);
+
+  goog.base(this, config);
 
   /**
    * @private
@@ -219,7 +220,10 @@ ol.Proj4jsProjection_.prototype.getPointResolution =
     // average of the width and height.
     if (goog.isNull(this.toEPSG4326_)) {
       this.toEPSG4326_ = ol.projection.getTransform(
-          this, ol.projection.getProj4jsProjectionFromCode_('EPSG:4326'));
+          this, ol.projection.getProj4jsProjectionFromCode_({
+            code: 'EPSG:4326',
+            extent: null
+          }));
     }
     var vertices = [
       point.x - resolution / 2, point.y,
@@ -433,7 +437,10 @@ ol.projection.removeTransform = function(source, destination) {
 ol.projection.getFromCode = function(code) {
   var projection = ol.projection.projections_[code];
   if (ol.HAVE_PROJ4JS && !goog.isDef(projection)) {
-    projection = ol.projection.getProj4jsProjectionFromCode_(code);
+    projection = ol.projection.getProj4jsProjectionFromCode_({
+      code: code,
+      extent: null
+    });
   }
   if (!goog.isDef(projection)) {
     goog.asserts.assert(goog.isDef(projection));
@@ -444,11 +451,12 @@ ol.projection.getFromCode = function(code) {
 
 
 /**
- * @param {string} code Code.
+ * @param {ol.Proj4jsProjectionOptions} options Projection config options.
  * @private
  * @return {ol.Proj4jsProjection_} Proj4js projection.
  */
-ol.projection.getProj4jsProjectionFromCode_ = function(code) {
+ol.projection.getProj4jsProjectionFromCode_ = function(options) {
+  var code = options.code;
   var proj4jsProjections = ol.projection.proj4jsProjections_;
   var proj4jsProjection = proj4jsProjections[code];
   if (!goog.isDef(proj4jsProjection)) {
@@ -456,7 +464,10 @@ ol.projection.getProj4jsProjectionFromCode_ = function(code) {
     var srsCode = proj4jsProj.srsCode;
     proj4jsProjection = proj4jsProjections[srsCode];
     if (!goog.isDef(proj4jsProjection)) {
-      proj4jsProjection = new ol.Proj4jsProjection_(srsCode, proj4jsProj);
+      var config = /** @type {ol.Proj4jsProjectionOptions} */
+          (goog.object.clone(options));
+      config.code = srsCode;
+      proj4jsProjection = new ol.Proj4jsProjection_(proj4jsProj, config);
       proj4jsProjections[srsCode] = proj4jsProjection;
     }
     proj4jsProjections[code] = proj4jsProjection;
@@ -509,7 +520,10 @@ ol.projection.getTransform = function(source, destination) {
       proj4jsSource = source;
     } else {
       proj4jsSource =
-          ol.projection.getProj4jsProjectionFromCode_(source.getCode());
+          ol.projection.getProj4jsProjectionFromCode_({
+            code: source.getCode(),
+            extent: null
+          });
     }
     var sourceProj4jsProj = proj4jsSource.getProj4jsProj();
     var proj4jsDestination;
@@ -517,7 +531,10 @@ ol.projection.getTransform = function(source, destination) {
       proj4jsDestination = destination;
     } else {
       proj4jsDestination =
-          ol.projection.getProj4jsProjectionFromCode_(destination.getCode());
+          ol.projection.getProj4jsProjectionFromCode_({
+            code: destination.getCode(),
+            extent: null
+          });
     }
     var destinationProj4jsProj = proj4jsDestination.getProj4jsProj();
     transform =