diff --git a/Library/Homebrew/extend/ENV/super.rb b/Library/Homebrew/extend/ENV/super.rb
index 07c03ec75b..4d6d96ad3e 100644
--- a/Library/Homebrew/extend/ENV/super.rb
+++ b/Library/Homebrew/extend/ENV/super.rb
@@ -325,6 +325,9 @@ module Superenv
 
   def set_x11_env_if_installed
   end
+
+  def set_cpu_flags(*)
+  end
 end
 
 class Array