diff --git a/test/test_leak.js b/test/test_leak.js
index 9d1f996..6c8c648 100644
--- a/test/test_leak.js
+++ b/test/test_leak.js
@@ -1,4 +1,4 @@
-var sys = require("sys");
+var util = require('util');
 
 var HashRing = require("../index");