diff --git a/lib/findPackage.js b/lib/findPackage.js
index <HASH>..<HASH> 100644
--- a/lib/findPackage.js
+++ b/lib/findPackage.js
@@ -7,8 +7,11 @@ var getPackageFunction = function (platform) {
 
   return platform.match(/^android|ios$/) ?
     require('./packages/' + platform) :
-    function (grunt) {
+    function (grunt, options, callback) {
       grunt.log.warn('Cannot support ' + platform + ' platform.');
+
+      // Unsupported platform is ran, but not error.
+      callback();
     };
 };
Fix bug "Stop package-files task with firefox platform."