diff --git a/configStore.js b/configStore.js
index <HASH>..<HASH> 100644
--- a/configStore.js
+++ b/configStore.js
@@ -113,6 +113,7 @@
   }
 
   function parse (config) {
+    config = config || {};
     var parsed = {};
 
     Object.keys(config).forEach(function (key) {
@@ -152,4 +153,4 @@
     }
   }
 
-})();
\ No newline at end of file
+})();
Make sure Object.keys arg is an object