diff --git a/jquery.scrollbar.js b/jquery.scrollbar.js
index 0883fd3..c3b8a75 100644
--- a/jquery.scrollbar.js
+++ b/jquery.scrollbar.js
@@ -13,12 +13,13 @@
  */
 ;
 (function (root, factory) {
+    'use strict';
     if (typeof define === 'function' && define.amd) {
         define(['jquery'], factory);
-    } else if (typeof exports !== "undefined") {
-        factory(require('jquery'));
+    } else if (typeof exports !== 'undefined') {
+        module.exports = factory(require('jquery'));
     } else {
-        factory(root.jQuery);
+        factory(jQuery);
     }
 }(this, function ($) {
     'use strict';