diff --git a/grunt/config/complexity.js b/grunt/config/complexity.js
index 865c365373..56a85cc191 100644
--- a/grunt/config/complexity.js
+++ b/grunt/config/complexity.js
@@ -1,3 +1,4 @@
+"use strict";
 var grunt = require('grunt');
 
 module.exports.generic = {