diff --git a/conference.js b/conference.js
index 363e471dd..2c4e8d690 100644
--- a/conference.js
+++ b/conference.js
@@ -496,6 +496,10 @@ export default {
             APP.UI.updateDTMFSupport(isDTMFSupported);
         });
 
+        room.on(ConferenceEvents.FIREFOX_EXTENSION_NEEDED, function (url) {
+            APP.UI.notifyFirefoxExtensionRequired(url);
+        });
+
         APP.UI.addListener(UIEvents.ROOM_LOCK_CLICKED, () => {
             if (room.isModerator()) {
                 let promise = roomLocker.isLocked
diff --git a/modules/UI/UI.js b/modules/UI/UI.js
index ff7da31f7..f49eb75b7 100644
--- a/modules/UI/UI.js
+++ b/modules/UI/UI.js
@@ -621,7 +621,7 @@ UI.notifyFirefoxExtensionRequired = function (url) {
         null,
         null,
         APP.translation.generateTranslationHTML(
-            "dialog.firefoxExtensionPrompt", {url: url}
+            "dialog.firefoxExtensionPrompt", {url}
         )
     );
 };