diff --git a/grunt.js b/grunt.js
index 2ddb3001c..4d94fd242 100644
--- a/grunt.js
+++ b/grunt.js
@@ -12,6 +12,8 @@ var child_process = require("child_process");
 
 module.exports = function( grunt ) {
 
+	"use strict";
+
 	// readOptionalJSON
 	// by Ben Alman
 	// https://gist.github.com/2876125