diff --git a/lib/OpenLayers/Tile/WFS.js b/lib/OpenLayers/Tile/WFS.js
index 38b3299f65..15a7b1eec8 100644
--- a/lib/OpenLayers/Tile/WFS.js
+++ b/lib/OpenLayers/Tile/WFS.js
@@ -23,7 +23,10 @@ OpenLayers.Tile.WFS.prototype =
     * @param {OpenLayers.Size} size
     */
     initialize: function(layer, position, bounds, urls, size) {
-        var newArguments = [layer, position, bounds, null, size];
+        var newArguments = arguments;
+        if (arguments.length > 0) {
+            newArguments = [layer, position, bounds, null, size];
+        }
         OpenLayers.Tile.prototype.initialize.apply(this, newArguments);
 
         this.urls = urls;