diff --git a/demos/draggable/opacity.html b/demos/draggable/opacity.html
index c407449bb..b9e5481ec 100644
--- a/demos/draggable/opacity.html
+++ b/demos/draggable/opacity.html
@@ -12,14 +12,14 @@
 	</style>
 	<script type="text/javascript">
 	$(function() {
-		$("#draggable").draggable({ opacity: 0.5 });
+		$("#draggable1").draggable({ opacity: 0.5 });
 		$("#draggable2").draggable({ opacity: 0.5, helper: 'clone' });
 	});
 	</script>
 </head>
 <body>
 
-<div id="draggable" class="ui-widget-content">
+<div id="draggable1" class="ui-widget-content">
 	<p>Opacity set to 0.5</p>
 </div>
 
