diff --git a/Library/brew.rb b/Library/brew.rb
index f60d3d4265..92de2cbee5 100755
--- a/Library/brew.rb
+++ b/Library/brew.rb
@@ -4,7 +4,6 @@
 std_trap = trap("INT") { exit! 130 } # no backtrace thanks
 
 HOMEBREW_BREW_FILE = ENV['HOMEBREW_BREW_FILE']
-HOMEBREW_BREW_FILE = ENV['HOMEBREW_BREW_FILE'] ||= File.expand_path(__FILE__)
 
 if ARGV == %w{--prefix}
   puts File.dirname(File.dirname(HOMEBREW_BREW_FILE))