diff --git a/src/vector/index.html b/src/vector/index.html
index dad179a7ba..4ba65c3e06 100644
--- a/src/vector/index.html
+++ b/src/vector/index.html
@@ -81,6 +81,6 @@
     </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>
+    <div id="mx_theme_accentColor"></div><div id="mx_theme_secondaryAccentColor"></div><div id="mx_theme_tertiaryAccentColor"></div>
   </body>
 </html>