diff --git a/src/vector/index.html b/src/vector/index.html
index 89512ab36ac..542c6f4d150 100644
--- a/src/vector/index.html
+++ b/src/vector/index.html
@@ -93,6 +93,10 @@
         <source src="media/busy.ogg" type="audio/ogg" />
         <source src="media/busy.mp3" type="audio/mpeg" />
     </audio>
+    <audio id="errorAudio">
+        <source src="media/error.ogg" type="audio/ogg" />
+        <source src="media/error.mp3" type="audio/mpeg" />
+    </audio>
     <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>