diff --git a/Casks/firefox-tw.rb b/Casks/firefox-tw.rb
index bdfd95344..69b907a9f 100644
--- a/Casks/firefox-tw.rb
+++ b/Casks/firefox-tw.rb
@@ -3,8 +3,15 @@ cask :v1 => 'firefox-tw' do
   sha256 :no_check
 
   url 'https://download.mozilla.org/?product=firefox-latest&os=osx&lang=zh-TW'
+  name 'Firefox'
   homepage 'http://mozilla.com.tw/firefox/new/'
-  license :oss
+  license :mpl
+  tags :vendor => 'Mozilla'
 
   app 'Firefox.app'
+  
+  zap :delete => [
+                  '~/Library/Application Support/Firefox',
+                  '~/Library/Caches/Firefox',
+                 ]
 end