diff --git a/Library/Homebrew/formula.rb b/Library/Homebrew/formula.rb
index 7becacc7bf..ecf5ec6ca6 100644
--- a/Library/Homebrew/formula.rb
+++ b/Library/Homebrew/formula.rb
@@ -77,7 +77,6 @@ class Formula
 
   def url;      active_spec.url;     end
   def version;  active_spec.version; end
-  def mirrors;  active_spec.mirrors; end
 
   def resource(name)
     active_spec.resource(name)