diff --git a/Casks/iswiff.rb b/Casks/iswiff.rb
index 62e48eead12..09d0bcd14f1 100644
--- a/Casks/iswiff.rb
+++ b/Casks/iswiff.rb
@@ -4,7 +4,7 @@ cask :v1 => 'iswiff' do
 
   url 'http://echoone.com/iswiff/iSwiff.dmg'
   homepage 'http://echoone.com/iswiff/'
-  license :unknown    # todo: improve this machine-generated value
+  license :unknown    # todo: change license and remove this comment; ':unknown' is a machine-generated placeholder
 
   app 'iSwiff.app'
 end