diff --git a/test/transports.xhr-polling.test.js b/test/transports.xhr-polling.test.js
index 80a1003f..7b03eb3c 100644
--- a/test/transports.xhr-polling.test.js
+++ b/test/transports.xhr-polling.test.js
@@ -1014,7 +1014,7 @@ module.exports = {
     });
   },
 
-  'test sending undeliverable volatile events': function () {
+  'test sending undeliverable volatile events': function (done) {
     var cl = client(++ports)
       , io = create(cl)
       , s;