diff --git a/lib/OpenLayers/Icon.js b/lib/OpenLayers/Icon.js
index 5c937b092b..7046f2d7c1 100644
--- a/lib/OpenLayers/Icon.js
+++ b/lib/OpenLayers/Icon.js
@@ -47,7 +47,8 @@ OpenLayers.Icon.prototype = {
                                                                 -(size.h/2));
                                    };
 
-        this.imageDiv = OpenLayers.Util.createAlphaImageDiv();
+        var id = OpenLayers.Util.createUniqueID("OL_Icon_");
+        this.imageDiv = OpenLayers.Util.createAlphaImageDiv(id);
     },
     
     destroy: function() {