diff --git a/index.php b/index.php
index 604df57..6237987 100644
--- a/index.php
+++ b/index.php
@@ -54,7 +54,7 @@
         </div>
 
         <script>
-          var el = document.querySelector('.tabs');
+          var el = document.querySelector(".tabs");
           var instance = M.Tabs.init(el, {});
         </script>
         ';