diff --git a/ui/widget.js b/ui/widget.js
index c101e59d4c1..c1fad65cc85 100644
--- a/ui/widget.js
+++ b/ui/widget.js
@@ -504,7 +504,7 @@ $.Widget.prototype = {
 					} );
 
 				if ( !isTracked ) {
-					that._on( $( element ), {
+					that._on( true, $( element ), {
 						remove: "_untrackClassesElement"
 					} );
 				}