diff --git a/Library/Homebrew/formula.rb b/Library/Homebrew/formula.rb
index a7cea5cf84..3de1935d8b 100644
--- a/Library/Homebrew/formula.rb
+++ b/Library/Homebrew/formula.rb
@@ -655,14 +655,14 @@ EOF
 end
 
 # see ack.rb for an example usage
-class ScriptFileFormula <Formula
+class ScriptFileFormula < Formula
   def install
     bin.install Dir['*']
   end
 end
 
 # see flac.rb for example usage
-class GithubGistFormula <ScriptFileFormula
+class GithubGistFormula < ScriptFileFormula
   def initialize name='__UNKNOWN__', path=nil
     super name
     @version=File.basename(File.dirname(url))[0,6]