diff --git a/Casks/firefox-ux.rb b/Casks/firefox-ux.rb
index 957633082..ae2874417 100644
--- a/Casks/firefox-ux.rb
+++ b/Casks/firefox-ux.rb
@@ -1,4 +1,4 @@
-class FirefoxUx < Cask
+cask :v1 => 'firefox-ux' do
   version :latest
   sha256 :no_check