diff --git a/vector/index.html b/vector/index.html
index d6d8ddcb61..e00c5a6f3e 100644
--- a/vector/index.html
+++ b/vector/index.html
@@ -49,6 +49,7 @@
         <source src="media/busy.ogg" type="audio/ogg" />
         <source src="media/busy.mp3" type="audio/mpeg" />
     </audio>
+    <audio id="remoteAudio"/>
     <script>
         if (window.location.host === 'www.vector.im' || window.location.host === 'vector.im') {
             (function(i,s,o,g,r,a,m){i['GoogleAnalyticsObject']=r;i[r]=i[r]||function(){