diff --git a/Casks/boot2docker.rb b/Casks/boot2docker.rb
index 3a4c299cf..4bb9dcd01 100644
--- a/Casks/boot2docker.rb
+++ b/Casks/boot2docker.rb
@@ -4,6 +4,7 @@ class Boot2docker < Cask
 
   url "https://github.com/boot2docker/osx-installer/releases/download/v#{version}/Boot2Docker-#{version}.pkg"
   homepage 'https://github.com/boot2docker/osx-installer'
+  license :oss
 
   pkg "Boot2Docker-#{version}.pkg"
   uninstall :pkgutil => ['io.boot2docker.pkg.boot2docker', 'io.boot2docker.pkg.boot2dockerapp', 'io.boot2dockeriso.pkg.boot2dockeriso', 'io.docker.pkg.docker']