diff --git a/Gruntfile.js b/Gruntfile.js
index be0ed86..c3bffb7 100644
--- a/Gruntfile.js
+++ b/Gruntfile.js
@@ -44,7 +44,7 @@ module.exports = function(grunt) {
         }
       },
       js: {
-        files: ['assets/scripts/**/*.js'],
+        files: ['assets/scripts/**/*.coffee'],
         tasks: ['coffee'],
         options: {
           atBegin: true,