diff --git a/lib/OpenLayers/Control/LayerSwitcher.js b/lib/OpenLayers/Control/LayerSwitcher.js
index c46572a9c4..799fbd609b 100644
--- a/lib/OpenLayers/Control/LayerSwitcher.js
+++ b/lib/OpenLayers/Control/LayerSwitcher.js
@@ -535,13 +535,13 @@ OpenLayers.Control.LayerSwitcher = OpenLayers.Class(OpenLayers.Control, {
      * evt - {Event}
      */
     mouseDown: function(evt) {
-        this.mouseDown = true;
+        this.isMouseDown = true;
         this.ignoreEvent(evt);
     },
 
     /** 
      * Method: mouseUp
-     * If the 'mouseDown' flag has been set, that means that the drag was 
+     * If the 'isMouseDown' flag has been set, that means that the drag was 
      *   started from within the LayerSwitcher control, and thus we can 
      *   ignore the mouseup. Otherwise, let the Event continue.
      *  
@@ -549,8 +549,8 @@ OpenLayers.Control.LayerSwitcher = OpenLayers.Class(OpenLayers.Control, {
      * evt - {Event} 
      */
     mouseUp: function(evt) {
-        if (this.mouseDown) {
-            this.mouseDown = false;
+        if (this.isMouseDown) {
+            this.isMouseDown = false;
             this.ignoreEvent(evt);
         }
     },