diff --git a/actionpack/test/dispatch/test_request_test.rb b/actionpack/test/dispatch/test_request_test.rb
index aa115608ef..4ee1d61146 100644
--- a/actionpack/test/dispatch/test_request_test.rb
+++ b/actionpack/test/dispatch/test_request_test.rb
@@ -40,6 +40,11 @@ class TestRequestTest < ActiveSupport::TestCase
     req.cookie_jar["login"] = "XJ-122"
     assert_cookies({"user_name" => "david", "login" => "XJ-122"}, req.cookie_jar)
 
+		assert_nothing_raised do
+      req.cookie_jar["login"] = nil
+      assert_cookies({"user_name" => "david", "login" => nil}, req.cookie_jar)
+		end
+
     req.cookie_jar.delete(:login)
     assert_cookies({"user_name" => "david"}, req.cookie_jar)