diff --git a/Casks/shady.rb b/Casks/shady.rb
index 0c962aa736a..c33570c9ce6 100644
--- a/Casks/shady.rb
+++ b/Casks/shady.rb
@@ -4,7 +4,7 @@ cask :v1 => 'shady' do
 
   url "http://instinctivecode.com/shady/shady_#{version}.zip"
   homepage 'http://instinctivecode.com/shady/'
-  license :unknown    # todo: improve this machine-generated value
+  license :oss
 
   app 'Shady.app'
 end