diff --git a/Library/Homebrew/compat/xcode.rb b/Library/Homebrew/compat/xcode.rb
index 3dd7f021cb..69abbf4b13 100644
--- a/Library/Homebrew/compat/xcode.rb
+++ b/Library/Homebrew/compat/xcode.rb
@@ -1,10 +1,11 @@
 module OS
   module Mac
     module Xcode
-      extend self
-
-      def provides_autotools?
-        version < "4.3"
+      class << self
+        def provides_autotools?
+          odeprecated "OS::Mac::Xcode.provides_autotools?"
+          version < "4.3"
+        end
       end
     end
   end