diff --git a/Casks/keyfinder.rb b/Casks/keyfinder.rb
index d228cb590..4db33d4cc 100644
--- a/Casks/keyfinder.rb
+++ b/Casks/keyfinder.rb
@@ -4,6 +4,7 @@ class Keyfinder < Cask
 
   url 'http://www.ibrahimshaath.co.uk/keyfinder/KeyFinder-OSX.zip'
   homepage 'http://www.ibrahimshaath.co.uk/keyfinder/'
+  license :unknown
 
   app 'KeyFinder-OSX/KeyFinder.app'
 end