diff --git a/Casks/hipchat.rb b/Casks/hipchat.rb
index f737117c744..e22a25f07f1 100644
--- a/Casks/hipchat.rb
+++ b/Casks/hipchat.rb
@@ -5,7 +5,7 @@ cask :v1 => 'hipchat' do
   url 'https://www.hipchat.com/downloads/latest/mac'
   appcast 'https://www.hipchat.com/release_notes/appcast/mac'
   homepage 'https://www.hipchat.com/'
-  license :unknown
+  license :unknown    # todo: improve this machine-generated value
 
   app 'HipChat.app'