diff --git a/Casks/bitmessage.rb b/Casks/bitmessage.rb
index 5f5797ca6..8840b7002 100644
--- a/Casks/bitmessage.rb
+++ b/Casks/bitmessage.rb
@@ -4,7 +4,7 @@ class Bitmessage < Cask
 
   url "https://bitmessage.org/download/osx/Archive/bitmessage-v#{version}.dmg"
   homepage 'https://bitmessage.org/'
-  license :unknown
+  license :mit
 
   app 'Bitmessage.app'
 end