diff --git a/lib/OpenLayers/Control/PanZoomBar.js b/lib/OpenLayers/Control/PanZoomBar.js
index bf153b41c2..adb78f0553 100644
--- a/lib/OpenLayers/Control/PanZoomBar.js
+++ b/lib/OpenLayers/Control/PanZoomBar.js
@@ -168,7 +168,7 @@ OpenLayers.Control.PanZoomBar.prototype =
         this.zoomStart = evt.xy.clone();
         this.div.style.cursor = "move";
         // reset the div offsets just in case the div moved
-        this.zoomBarDiv.offsets = null; 
+        this.zoombarDiv.offsets = null; 
         OpenLayers.Event.stop(evt);
     },