diff --git a/media/js/jquery.dataTables.js b/media/js/jquery.dataTables.js
index a7ddc4e3..fc4415b5 100644
--- a/media/js/jquery.dataTables.js
+++ b/media/js/jquery.dataTables.js
@@ -4716,17 +4716,21 @@
 		 */
 		function _fnExtend( oOut, oExtender )
 		{
+			var val;
+			
 			for ( var prop in oExtender )
 			{
 				if ( oExtender.hasOwnProperty(prop) )
 				{
-					if ( typeof oInit[prop] === 'object' && $.isArray(oExtender[prop]) === false )
+					val = oExtender[prop];
+		
+					if ( typeof oInit[prop] === 'object' && val !== null && $.isArray(val) === false )
 					{
-						$.extend( true, oOut[prop], oExtender[prop] );
+						$.extend( true, oOut[prop], val );
 					}
 					else
 					{
-						oOut[prop] = oExtender[prop];
+						oOut[prop] = val;
 					}
 				}
 			}
diff --git a/media/src/core/core.support.js b/media/src/core/core.support.js
index 5fe8544c..7051697b 100644
--- a/media/src/core/core.support.js
+++ b/media/src/core/core.support.js
@@ -166,17 +166,21 @@ function _fnMap( oRet, oSrc, sName, sMappedName )
  */
 function _fnExtend( oOut, oExtender )
 {
+	var val;
+	
 	for ( var prop in oExtender )
 	{
 		if ( oExtender.hasOwnProperty(prop) )
 		{
-			if ( typeof oInit[prop] === 'object' && $.isArray(oExtender[prop]) === false )
+			val = oExtender[prop];
+
+			if ( typeof oInit[prop] === 'object' && val !== null && $.isArray(val) === false )
 			{
-				$.extend( true, oOut[prop], oExtender[prop] );
+				$.extend( true, oOut[prop], val );
 			}
 			else
 			{
-				oOut[prop] = oExtender[prop];
+				oOut[prop] = val;
 			}
 		}
 	}