diff --git a/index.js b/index.js
index 419038e..289d8a3 100644
--- a/index.js
+++ b/index.js
@@ -1,10 +1,10 @@
-"use strict";
+'use strict';
 
 var path = require('path');
 
 module.exports = {
   rules: {
-    "no-js": function(context) {
+    'no-js': function(context) {
       return {
         Program: function(node) {
           if (path.extname(context.getFilename()) === '.js') {