diff --git a/Library/brew.rb b/Library/brew.rb
index 8b8376422e75c53fdb9f32aa3cdd3fcbcf712c31..e9c9fe994c369decb29d081e56861bcda1a9ba78 100755
--- a/Library/brew.rb
+++ b/Library/brew.rb
@@ -98,7 +98,7 @@ begin
 
   cmd = aliases[cmd] if aliases[cmd]
 
-  sudo_check = Set.new %w[ install link pin unpin upgrade ]
+  sudo_check = %w[ install link pin unpin upgrade ]
 
   if sudo_check.include? cmd
     if Process.uid.zero? and not File.stat(HOMEBREW_BREW_FILE).uid.zero?