diff --git a/Casks/electrum.rb b/Casks/electrum.rb
index 15fedce5a..90ba3e676 100644
--- a/Casks/electrum.rb
+++ b/Casks/electrum.rb
@@ -1,4 +1,4 @@
-class Electrum < Cask
+cask :v1 => 'electrum' do
   version '1.9.8'
   sha256 'ad3818e34a9b3a292257377e337603ed362ff928f2054e92f764d771f0e49ec0'