diff --git a/HTML/tabs.html b/HTML/tabs.html
index aea322b63..de99ea5f3 100644
--- a/HTML/tabs.html
+++ b/HTML/tabs.html
@@ -16,6 +16,7 @@
   </div>
 
 <script src="vendor/jquery.js"></script>
+<script src="ace/ace.js" type="text/javascript" charset="utf-8"></script>
 <script src="lib/osx.js" type="text/javascript" charset="utf-8"></script>
 <script src="lib/tabs.js"></script>