diff --git a/addons/website/static/lib/ckeditor/core/resourcemanager.js b/addons/website/static/lib/ckeditor/core/resourcemanager.js
index 3570580df9d..6132ee8000f 100644
--- a/addons/website/static/lib/ckeditor/core/resourcemanager.js
+++ b/addons/website/static/lib/ckeditor/core/resourcemanager.js
@@ -172,8 +172,7 @@ CKEDITOR.resourceManager.prototype = {
 		var loaded = this.loaded,
 			registered = this.registered,
 			urls = [],
-			urlsNames = {},
-			resources = {};
+			urlsNames = {};
 
 		// Loop through all names.
 		for ( var i = 0; i < names.length; i++ ) {
@@ -189,8 +188,7 @@ CKEDITOR.resourceManager.prototype = {
 				if ( !( url in urlsNames ) )
 					urlsNames[ url ] = [];
 				urlsNames[ url ].push( name );
-			} else
-				resources[ name ] = this.get( name );
+			}
 		}
 
 		CKEDITOR.scriptLoader.load( urls, function( completed, failed ) {
@@ -203,11 +201,16 @@ CKEDITOR.resourceManager.prototype = {
 				var nameList = urlsNames[ completed[ i ] ];
 				for ( var j = 0; j < nameList.length; j++ ) {
 					var name = nameList[ j ];
-					resources[ name ] = this.get( name );
 
 					loaded[ name ] = 1;
 				}
 			}
+            var resources = {};
+            for ( var k = 0; k < names.length; ++k ) {
+                var name_ = names[ k ];
+                if ( !name_ ) continue;
+                resources[ name_ ] = this.get( name_ );
+            }
 
 			callback.call( scope, resources );
 		}, this );