diff --git a/Library/Homebrew/test/testing_env.rb b/Library/Homebrew/test/testing_env.rb
index 8961db729d..8526cc8538 100644
--- a/Library/Homebrew/test/testing_env.rb
+++ b/Library/Homebrew/test/testing_env.rb
@@ -77,7 +77,6 @@ require 'compat' unless ARGV.include? "--no-compat" or ENV['HOMEBREW_NO_COMPAT']
 
 require 'test/unit' # must be after at_exit
 require 'extend/ARGV' # needs to be after test/unit to avoid conflict with OptionsParser
-require 'extend/ENV'
 ARGV.extend(HomebrewArgvExtension)
 
 begin