1 files changed, 1 insertions, 1 deletions
diff --git a/Library/Homebrew/utils/popen.rb b/Library/Homebrew/utils/popen.rb
index f30a2a0fe..2fa3ade46 100644
--- a/Library/Homebrew/utils/popen.rb
+++ b/Library/Homebrew/utils/popen.rb
@@ -13,7 +13,7 @@ module Utils
         return pipe.read unless block_given?
         yield pipe
       else
-        options[:err] ||= :close
+        options[:err] ||= :close unless ENV["HOMEBREW_STDERR"]
         exec(*args, options)
       end
     end