diff --git a/src/vector/index.html b/src/vector/index.html
index 8568d96a92..d05fb4d0ba 100644
--- a/src/vector/index.html
+++ b/src/vector/index.html
@@ -71,7 +71,7 @@
         <source src="media/busy.ogg" type="audio/ogg" />
         <source src="media/busy.mp3" type="audio/mpeg" />
     </audio>
-    <audio id="remoteAudio"/>
+    <audio id="remoteAudio"></audio>
     <!-- let CSS themes pass constants to the app -->
     <div id="mx_theme_accentColor"></div><div id="mx_theme_secondaryAccentColor"/></div><div id="mx_theme_tertiaryAccentColor"/></div>
   </body>