diff --git a/Library/Homebrew/cmd/doctor.rb b/Library/Homebrew/cmd/doctor.rb
index 06f3d8c6ee..3eb04a5057 100644
--- a/Library/Homebrew/cmd/doctor.rb
+++ b/Library/Homebrew/cmd/doctor.rb
@@ -924,7 +924,7 @@ def check_git_status
       If this a surprise to you, then you should stash these modifications.
       Stashing returns Homebrew to a pristine state but can be undone
       should you later need to do so for some reason.
-          cd #{HOMEBREW_REPOSITORY}/Library && git stash && git clean -f
+          cd #{HOMEBREW_REPOSITORY}/Library && git stash && git clean -d -f
       EOS
     end
   end