diff --git a/Casks/icolors.rb b/Casks/icolors.rb
index b96024b55..927648417 100644
--- a/Casks/icolors.rb
+++ b/Casks/icolors.rb
@@ -4,7 +4,7 @@ cask :v1 => 'icolors' do
 
   url "https://www.fadingred.com/files/icolors/icolors_#{version}.zip"
   homepage 'http://www.fadingred.com/icolors/'
-  license :unknown
+  license :unknown    # todo: improve this machine-generated value
 
   app 'iColors.app'
 end