diff --git a/index.php b/index.php
index 5a5a2f6..1156b6d 100644
--- a/index.php
+++ b/index.php
@@ -69,7 +69,7 @@
     </div>
 </div>
 <script>
-var $ = mdui.JQ;
+var $ = mdui.$;
 
 function change(type)
 {