diff --git a/lib/util.js b/lib/util.js
index 46aae627..1a340e00 100644
--- a/lib/util.js
+++ b/lib/util.js
@@ -404,12 +404,12 @@
                 return typeof variable === name;
             }
             
-            ['arrayBuffer', 'object', 'file', 'array']
+            ['arrayBuffer', 'file', 'array']
                 .forEach(function(name) {
                     type[name] = typeOf.bind(null, name);
                 });
             
-            ['string', 'undefined', 'boolean', 'number', 'function']
+            ['string', 'undefined', 'boolean', 'number', 'function', 'object']
                 .forEach(function(name) {
                     type[name] = typeOfSimple.bind(null, name);
                 });