diff --git a/src/ol/projection/epsg3857.js b/src/ol/projection/epsg3857.js
index 1e3c709f39..e1e41e6a2c 100644
--- a/src/ol/projection/epsg3857.js
+++ b/src/ol/projection/epsg3857.js
@@ -57,7 +57,8 @@ ol.projection.EPSG3857.CODES = [
   'EPSG:3857',
   'EPSG:102100',
   'EPSG:102113',
-  'EPSG:900913'
+  'EPSG:900913',
+  'urn:ogc:def:crs:EPSG:6.18:3:3857'
 ];
 
 
diff --git a/src/ol/projection/epsg4326.js b/src/ol/projection/epsg4326.js
index bfc3dd37ec..e0ea8eba83 100644
--- a/src/ol/projection/epsg4326.js
+++ b/src/ol/projection/epsg4326.js
@@ -44,7 +44,8 @@ ol.projection.EPSG4326.PROJECTIONS = [
   new ol.projection.EPSG4326('CRS:84'),
   new ol.projection.EPSG4326('EPSG:4326', 'neu'),
   new ol.projection.EPSG4326('urn:ogc:def:crs:EPSG:6.6:4326', 'neu'),
-  new ol.projection.EPSG4326('urn:ogc:def:crs:OGC:1.3:CRS84')
+  new ol.projection.EPSG4326('urn:ogc:def:crs:OGC:1.3:CRS84'),
+  new ol.projection.EPSG4326('urn:ogc:def:crs:OGC:2:84')
 ];