diff --git a/source/Ox/js/Type.js b/source/Ox/js/Type.js
index 5ddd19af..3dbc45ac 100644
--- a/source/Ox/js/Type.js
+++ b/source/Ox/js/Type.js
@@ -409,10 +409,12 @@ Ox.typeOf = function(value) {
 // Internet Explorer 8 returns 'Object' for nodelists,
 // Internet Explorer 9 returns 'HTMLCollection' for nodelists,
 // Mobile Safari returns 'DOMWindow' for null and undefined
+// Firefox 30+ returns 'window' for window
 if (
     Ox.typeOf((function() { return arguments; }())) != 'arguments'
     || Ox.typeOf(document.getElementsByTagName('a')) != 'nodelist'
     || Ox.typeOf(null) != 'null'
+    || Ox.typeOf(window) != 'global'
     || Ox.typeOf() != 'undefined'
 ) {
     Ox.typeOf = function(value) {
@@ -423,6 +425,8 @@ if (
             type = 'null';
         } else if (value === void 0) {
             type = 'undefined';
+        } else if (value === window) {
+            type = 'window';
         } else if (type == 'object' && typeof value.callee == 'function') {
             type = 'arguments';
         } else if (