diff --git a/Casks/opera-beta.rb b/Casks/opera-beta.rb
index 9460cfe3a..8e232336b 100644
--- a/Casks/opera-beta.rb
+++ b/Casks/opera-beta.rb
@@ -1,4 +1,4 @@
-class OperaBeta < Cask
+cask :v1 => 'opera-beta' do
   version '25.0.1614.35'
   sha256 '058680c29a05a4b8f10f19b0d6fc73eb2d0645325e73177ac7522aa77e712be8'