diff --git a/Casks/virtualbox.rb b/Casks/virtualbox.rb
index 1cd188b4c..92e84daeb 100644
--- a/Casks/virtualbox.rb
+++ b/Casks/virtualbox.rb
@@ -3,4 +3,5 @@ class Virtualbox < Cask
   homepage 'http://www.virtualbox.org'
   version '4.2.12-84980'
   sha1 '9a5913f0b25c69a67b554caa9bebd1a4d72d3d00'
+  install 'VirtualBox.pkg'
 end