diff --git a/web/ts/TUMLiveVjs.ts b/web/ts/TUMLiveVjs.ts
index 0e4e79bb8..f064f31e7 100644
--- a/web/ts/TUMLiveVjs.ts
+++ b/web/ts/TUMLiveVjs.ts
@@ -65,7 +65,7 @@ class PlayerSettings {
         });
 
         // Listen for mute/unmute event
-        this.player.on('volumechange', () => {
+        this.player.on("volumechange", () => {
             updateMuteToggleControlText.call(this);
         });