diff --git a/lib/OpenLayers/Layer/WFS.js b/lib/OpenLayers/Layer/WFS.js
index ffc564b95b..4461546b86 100644
--- a/lib/OpenLayers/Layer/WFS.js
+++ b/lib/OpenLayers/Layer/WFS.js
@@ -263,8 +263,7 @@ OpenLayers.Layer.WFS.prototype =
 
         var failure = this.commitFailure.bind(this)
         
-        //  
-        OpenLayers.Ajax.serializeXMLToString(data);
+        data = OpenLayers.Ajax.serializeXMLToString(data);
         
         // from prototype.js
         new OpenLayers.Ajax.Request(url,