diff --git a/Casks/cocktail-snowleopard.rb b/Casks/cocktail-snowleopard.rb
index 7bd397cbe..100c482d9 100644
--- a/Casks/cocktail-snowleopard.rb
+++ b/Casks/cocktail-snowleopard.rb
@@ -4,6 +4,7 @@ class CocktailSnowleopard < Cask
 
   url 'http://usa.maintain.se/CocktailSLE.dmg'
   homepage 'http://maintain.se/cocktail'
+  license :unknown
 
   app 'Cocktail.app'
 end