diff --git a/src/templates/pad.html b/src/templates/pad.html
index 9a6ff9dd..e88df22d 100644
--- a/src/templates/pad.html
+++ b/src/templates/pad.html
@@ -316,6 +316,7 @@
         <script type="text/javascript" src="../static/js/jquery.js"></script>
         <script type="text/javascript" src="../socket.io/socket.io.js"></script>
         <script type="text/javascript" src="../javascripts/lib/ep_etherpad-lite/static/js/pad.js?callback=require.define"></script>
+        <script type="text/javascript" src="../javascripts/lib/ep_etherpad-lite/static/js/ace2_common.js?callback=require.define"></script>
         <script type="text/javascript">
             if ((!$.browser.msie) && (!($.browser.mozilla && $.browser.version.indexOf("1.8.") == 0)))
             {
diff --git a/src/templates/timeslider.html b/src/templates/timeslider.html
index 73f246b8..a626ffad 100644
--- a/src/templates/timeslider.html
+++ b/src/templates/timeslider.html
@@ -96,6 +96,7 @@
 <script type="text/javascript" src="../../static/js/jquery.js"></script>
 <script type="text/javascript" src="../../socket.io/socket.io.js"></script>
 <script type="text/javascript" src="../../javascripts/lib/ep_etherpad-lite/static/js/timeslider.js?callback=require.define"></script>
+<script type="text/javascript" src="../../javascripts/lib/ep_etherpad-lite/static/js/ace2_common.js?callback=require.define"></script>
 <script type="text/javascript" src="../../static/custom/timeslider.js"></script>
 
 <script type="text/javascript" >