diff --git a/Library/Homebrew/mach.rb b/Library/Homebrew/mach.rb
index d1f4540ecb..be93aca572 100644
--- a/Library/Homebrew/mach.rb
+++ b/Library/Homebrew/mach.rb
@@ -3,6 +3,10 @@ module ArchitectureListExtension
     self.include? :i386 and self.include? :x86_64
   end
 
+  def ppc?
+    self.include? :ppc7400 or self.include? :ppc64
+  end
+
   def remove_ppc!
     self.delete :ppc7400
     self.delete :ppc64