diff --git a/functional/test.pusher.js b/functional/test.pusher.js
index df270d2..3c0d1af 100644
--- a/functional/test.pusher.js
+++ b/functional/test.pusher.js
@@ -17,7 +17,8 @@ function getPusher(auth) {
     wsPort: PORT,
     authEndpoint: auth,
     enabledTransports: ["ws"],
-    disabledTransports: ["flash"]
+    disabledTransports: ["flash"],
+    cluster: "hello", // Should be ignored
   });
 }