diff --git a/Casks/google-drive.rb b/Casks/google-drive.rb
index 6cce16b04b9..f7bf995e91d 100644
--- a/Casks/google-drive.rb
+++ b/Casks/google-drive.rb
@@ -4,7 +4,7 @@ cask :v1 => 'google-drive' do
 
   url 'https://dl.google.com/drive/installgoogledrive.dmg'
   homepage 'https://drive.google.com/'
-  license :unknown
+  license :unknown    # todo: improve this machine-generated value
 
   app 'Google Drive.app'
 end