diff --git a/lib/tor.js b/lib/tor.js
index 095f143c..09e00e0e 100644
--- a/lib/tor.js
+++ b/lib/tor.js
@@ -75,5 +75,5 @@ getTorIPs(function (err, ips) {
 });
 
 exports.isTorExit = function (ip) {
-    return this._ipList.indexOf(ip) >= 0;
+    return _ipList.indexOf(ip) >= 0;
 };