diff --git a/Gruntfile.js b/Gruntfile.js
index 89d2ac13f..051a3aa72 100644
--- a/Gruntfile.js
+++ b/Gruntfile.js
@@ -110,7 +110,7 @@ module.exports = function(grunt) {
       ],
       res: [
         'audio/**',
-        'images/**',
+        'images/**/*',
         'fonts/*',
       ]
     },