diff --git a/bigbluebutton-html5/client/main.html b/bigbluebutton-html5/client/main.html
index 5c9ad032fd..2f8b2de10d 100755
--- a/bigbluebutton-html5/client/main.html
+++ b/bigbluebutton-html5/client/main.html
@@ -127,7 +127,9 @@ with BigBlueButton; if not, see <http://www.gnu.org/licenses/>.
 </head>
 <body style="background-color: #06172A">
   <div id="aria-polite-alert" aria-live="polite" aria-atomic="false" class="sr-only"></div>
-  <div id="app" role="document">
+  <main>
+    <div id="app" role="document">
+  </main>
   </div>
   <span id="destination"></span>
   <audio id="remote-media" autoplay>
