diff --git a/actionpack/test/dispatch/request/multipart_params_parsing_test.rb b/actionpack/test/dispatch/request/multipart_params_parsing_test.rb
index aaf647e45a..9e008a9ae8 100644
--- a/actionpack/test/dispatch/request/multipart_params_parsing_test.rb
+++ b/actionpack/test/dispatch/request/multipart_params_parsing_test.rb
@@ -94,9 +94,8 @@ class MultipartParamsParsingTest < ActionController::IntegrationTest
     assert_equal %w(files foo), params.keys.sort
     assert_equal 'bar', params['foo']
 
-    # Ruby CGI doesn't handle multipart/mixed for us.
+    # Rack doesn't handle multipart/mixed for us.
     files = params['files']
-    assert_not_kind_of Hash, files
     files.force_encoding('ASCII-8BIT') if files.respond_to?(:force_encoding)
     assert_equal 19756, files.size
   end