diff --git a/Library/Homebrew/formula.rb b/Library/Homebrew/formula.rb
index c18fb59a13..e1c1ded556 100644
--- a/Library/Homebrew/formula.rb
+++ b/Library/Homebrew/formula.rb
@@ -666,8 +666,8 @@ class Formula
   # The methods below define the formula DSL.
   class << self
 
-    attr_rw :homepage, :keg_only_reason, :cc_failures
-    attr_rw :plist_startup, :plist_manual
+    attr_reader :keg_only_reason, :cc_failures
+    attr_rw :homepage, :plist_startup, :plist_manual
 
     def specs
       @specs ||= [stable, devel, head, bottle].freeze