diff --git a/core/modules/widgets/draggable.js b/core/modules/widgets/draggable.js
index 22fdc37e9..97e795ae4 100644
--- a/core/modules/widgets/draggable.js
+++ b/core/modules/widgets/draggable.js
@@ -119,7 +119,7 @@ DraggableWidget.prototype.refresh = function(changedTiddlers) {
 		return true;
 	} else {
 		if(changedAttributes["class"]) {
-			this.assignDomNodeClasses();
+			this.updateDomNodeClasses();
 		}
 		this.assignAttributes(this.domNodes[0],{
 			changedAttributes: changedAttributes,
@@ -132,4 +132,4 @@ DraggableWidget.prototype.refresh = function(changedTiddlers) {
 
 exports.draggable = DraggableWidget;
 
-})();
\ No newline at end of file
+})();