diff --git a/src/async.js b/src/async.js
index 14d1b7c..4723e93 100644
--- a/src/async.js
+++ b/src/async.js
@@ -1,3 +1,4 @@
+/*jslint browser: true */
 /*
 * AsyncJS JavaScript Trick
 * https://github.com/olaferlandsen/AsyncJS