diff --git a/Library/Homebrew/cli_parser.rb b/Library/Homebrew/cli_parser.rb
index e487e8580a..01310d42e3 100644
--- a/Library/Homebrew/cli_parser.rb
+++ b/Library/Homebrew/cli_parser.rb
@@ -126,7 +126,7 @@ module Homebrew
         begin
           remaining_args = @parser.parse(cmdline_args)
         rescue OptionParser::InvalidOption => e
-          puts generate_help_text
+          $stderr.puts generate_help_text
           raise e
         end
         check_constraint_violations