diff --git a/Library/Homebrew/extend/ARGV.rb b/Library/Homebrew/extend/ARGV.rb
index a48c0f9930..de1f428e02 100644
--- a/Library/Homebrew/extend/ARGV.rb
+++ b/Library/Homebrew/extend/ARGV.rb
@@ -200,6 +200,10 @@ module HomebrewArgvExtension
     value 'cc'
   end
 
+  def env
+    value 'env'
+  end
+
   private
 
   def downcased_unique_named