diff --git a/Casks/macupdate-desktop.rb b/Casks/macupdate-desktop.rb
index a8478d4cb4d..18afd405c43 100644
--- a/Casks/macupdate-desktop.rb
+++ b/Casks/macupdate-desktop.rb
@@ -6,7 +6,7 @@ cask :v1 => 'macupdate-desktop' do
   appcast 'https://www.macupdate.com/desktop/updates.xml',
           :sha256 => 'f34602a28e842a77a7159342463747c05d783d44613feed26bbf742d88e3607f'
   homepage 'https://www.macupdate.com/desktop'
-  license :unknown
+  license :unknown    # todo: improve this machine-generated value
 
   app 'MacUpdate Desktop.app'