diff --git a/lodash.js b/lodash.js
index 71b4c6a05..d2af99a4a 100644
--- a/lodash.js
+++ b/lodash.js
@@ -870,7 +870,7 @@
        * @memberOf _.support
        * @type boolean
        */
-      support.nonEnumArgs = key != 0;
+      support.nonEnumArgs = key != '0';
 
       /**
        * Detect if properties shadowing those on `Object.prototype` are non-enumerable.