diff --git a/Casks/macports.rb b/Casks/macports.rb
index cc82f398b6d..ff9aa896d0e 100644
--- a/Casks/macports.rb
+++ b/Casks/macports.rb
@@ -18,7 +18,7 @@ cask :v1 => 'macports' do
   gpg "#{url}.asc",
       :key_id => '01ff673fb4aae6cd'
   homepage 'http://www.macports.org'
-  license :unknown    # todo: improve this machine-generated value
+  license :unknown    # todo: change license and remove this comment; ':unknown' is a machine-generated placeholder
 
   uninstall :pkgutil => 'org.macports.MacPorts'
   zap       :delete  => '~/.macports'