diff --git a/Casks/intellij-idea-ultimate12.rb b/Casks/intellij-idea-ultimate12.rb
index 1957f5e56..67e81b310 100644
--- a/Casks/intellij-idea-ultimate12.rb
+++ b/Casks/intellij-idea-ultimate12.rb
@@ -4,6 +4,7 @@ class IntellijIdeaUltimate12 < Cask
 
   url "http://download.jetbrains.com/idea/ideaIU-#{version}.dmg"
   homepage 'https://www.jetbrains.com/idea/index.html'
+  license :unknown
 
   app 'IntelliJ IDEA 12.app'
 end