diff --git a/Library/Homebrew/keg.rb b/Library/Homebrew/keg.rb
index d09dadd15d..ad0e97653d 100644
--- a/Library/Homebrew/keg.rb
+++ b/Library/Homebrew/keg.rb
@@ -1,6 +1,6 @@
 require 'extend/pathname'
 
-class Keg <Pathname
+class Keg < Pathname
   def initialize path
     super path
     raise "#{to_s} is not a valid keg" unless parent.parent.realpath == HOMEBREW_CELLAR.realpath