diff --git a/Casks/deeper.rb b/Casks/deeper.rb
index 8bcd0b8a91c..5c7f0b92d46 100644
--- a/Casks/deeper.rb
+++ b/Casks/deeper.rb
@@ -22,7 +22,7 @@ cask :v1 => 'deeper' do
   end
 
   homepage 'http://www.titanium.free.fr/downloaddeeper.php'
-  license :unknown    # todo: change license and remove this comment; ':unknown' is a machine-generated placeholder
+  license :gratis
 
   app 'Deeper.app'