diff --git a/src/utils/WidgetUtils.js b/src/utils/WidgetUtils.js
index e92fd1ed27..45ca7602bd 100644
--- a/src/utils/WidgetUtils.js
+++ b/src/utils/WidgetUtils.js
@@ -492,7 +492,7 @@ export default class WidgetUtils {
             // safe to send.
             // We'll end up using a local render URL when we see a Jitsi widget anyways, so this is
             // really just for backwards compatibility and to appease the spec.
-            baseUrl = "https://riot.im/app";
+            baseUrl = "https://riot.im/app/";
         }
         const url = new URL("jitsi.html#" + queryString, baseUrl); // this strips hash fragment from baseUrl
         return url.href;