diff --git a/Library/Homebrew/utils.rb b/Library/Homebrew/utils.rb
index 6ef48ad312..a96d0e2ae7 100644
--- a/Library/Homebrew/utils.rb
+++ b/Library/Homebrew/utils.rb
@@ -28,6 +28,7 @@ class Tty
     def red; underline 31; end
     def yellow; underline 33 ; end
     def reset; escape 0; end
+    def em; underline 39; end
     
   private
     def color n