diff --git a/Casks/bettertouchtool.rb b/Casks/bettertouchtool.rb
index a0af74a1eb6..dbc658eea02 100644
--- a/Casks/bettertouchtool.rb
+++ b/Casks/bettertouchtool.rb
@@ -5,7 +5,7 @@ class Bettertouchtool < Cask
   url 'http://www.boastr.de/BetterTouchTool.zip'
   appcast 'http://appcast.boastr.net'
   homepage 'http://blog.boastr.net/'
-  license :unknown
+  license :commercial
 
   app 'BetterTouchTool.app'
   zap :delete => [