diff --git a/src/hammer.prefix.js b/src/hammer.prefix.js
index debc7fff2..9d9cedabd 100644
--- a/src/hammer.prefix.js
+++ b/src/hammer.prefix.js
@@ -1,2 +1,2 @@
-(function(window, document, exportName, undefined) {
+(function(window, exportName, undefined) {
   'use strict';
diff --git a/src/hammer.suffix.js b/src/hammer.suffix.js
index 41bfecfc2..1283946ec 100644
--- a/src/hammer.suffix.js
+++ b/src/hammer.suffix.js
@@ -1 +1 @@
-})(window, document, 'Hammer');
+})(typeof window !== 'undefined' ? window : this, 'Hammer');
diff --git a/src/utils.js b/src/utils.js
index c923ce533..29618b606 100644
--- a/src/utils.js
+++ b/src/utils.js
@@ -1,3 +1,5 @@
+var document = window.document;
+
 var VENDOR_PREFIXES = ['', 'webkit', 'Moz', 'MS', 'ms', 'o'];
 var TEST_ELEMENT = document.createElement('div');