diff --git a/Casks/hockeyapp.rb b/Casks/hockeyapp.rb
index ae36cf749f0..5d603e799ad 100644
--- a/Casks/hockeyapp.rb
+++ b/Casks/hockeyapp.rb
@@ -5,6 +5,7 @@ class Hockeyapp < Cask
   url 'https://rink.hockeyapp.net/api/2/apps/67503a7926431872c4b6c1549f5bd6b1?format=zip'
   appcast 'https://rink.hockeyapp.net/api/2/apps/67503a7926431872c4b6c1549f5bd6b1'
   homepage 'http://hockeyapp.net/releases/mac/'
+  license :unknown
 
   app 'HockeyApp.app'
   binary 'HockeyApp.app/Contents/Resources/puck'