diff --git a/lib/OpenLayers/Marker.js b/lib/OpenLayers/Marker.js
index 509c7a5fff..a28ca5c1ec 100644
--- a/lib/OpenLayers/Marker.js
+++ b/lib/OpenLayers/Marker.js
@@ -62,11 +62,11 @@ OpenLayers.Marker.prototype = {
 OpenLayers.Marker.defaultIcon = function() {
     var url = OpenLayers.Util.getImagesLocation() + "marker.png";
     var size = new OpenLayers.Size(21, 25);
-    var offset = function(size) {
-                    return OpenLayers.Pixel(-(size.w/2), -size.h);
+    var calculateOffset = function(size) {
+                    return new OpenLayers.Pixel(-(size.w/2), -size.h);
                  };
 
-    return new OpenLayers.Icon(url, size, offset);        
+    return new OpenLayers.Icon(url, size, null, calculateOffset);        
 };