diff --git a/Casks/power-manager-pro.rb b/Casks/power-manager-pro.rb
index 2d7ecaf7d55..a43f686824f 100644
--- a/Casks/power-manager-pro.rb
+++ b/Casks/power-manager-pro.rb
@@ -5,7 +5,7 @@ cask :v1 => 'power-manager-pro' do
   url 'https://www.dssw.co.uk/powermanager/dsswpowermanagerpro.dmg'
   appcast 'http://version.dssw.co.uk/powermanager/professional'
   homepage 'https://www.dssw.co.uk/powermanager'
-  license :unknown
+  license :unknown    # todo: improve this machine-generated value
 
   app 'Power Manager Pro.app'
 end