diff --git a/Casks/omniplan.rb b/Casks/omniplan.rb
index 3d8a060a1ff..b77dcbe57fa 100644
--- a/Casks/omniplan.rb
+++ b/Casks/omniplan.rb
@@ -4,7 +4,7 @@ cask :v1 => 'omniplan' do
 
   url 'https://www.omnigroup.com/download/latest/omniplan'
   homepage 'http://www.omnigroup.com/products/omniplan/'
-  license :unknown
+  license :unknown    # todo: improve this machine-generated value
 
   app 'OmniPlan.app'
 end