diff --git a/actionmailer/test/quoting_test.rb b/actionmailer/test/quoting_test.rb
index 2650efccdb8147531935d9522ff3838ef6db86f4..2fee1379db101304c2efa22cc2c4c8aa363d6921 100644
--- a/actionmailer/test/quoting_test.rb
+++ b/actionmailer/test/quoting_test.rb
@@ -48,8 +48,10 @@ def test_quote_multibyte_chars
 
     result = execute_in_sandbox(<<-CODE)
       $:.unshift(File.dirname(__FILE__) + "/../lib/")
-      $KCODE = 'u'
-      require 'jcode'
+      if RUBY_VERSION < '1.9'
+        $KCODE = 'u'
+        require 'jcode'
+      end
       require 'action_mailer/quoting'
       include ActionMailer::Quoting
       quoted_printable(#{original.inspect}, "UTF-8")