diff --git a/app.js b/app.js
index eca8a0a..0bd98c9 100644
--- a/app.js
+++ b/app.js
@@ -279,7 +279,7 @@ function leaveRoom() {
       roomItem.remove();
     }
 
-    config.rooms = config.rooms.filter(e => e !== currentRoom.topic);
+    config.rooms = config.rooms.filter(e => e !== currentRoom.topic.toString());
     writeConfigToFile("./config.json");
 
     currentRoom.destroy();