1 files changed, 1 insertions, 4 deletions
diff --git a/actionpack/test/dispatch/request/url_encoded_params_parsing_test.rb b/actionpack/test/dispatch/request/url_encoded_params_parsing_test.rb
index 9a77454f30..1de05cbf09 100644
--- a/actionpack/test/dispatch/request/url_encoded_params_parsing_test.rb
+++ b/actionpack/test/dispatch/request/url_encoded_params_parsing_test.rb
@@ -130,10 +130,7 @@ class UrlEncodedParamsParsingTest < ActionDispatch::IntegrationTest
   end
 
   test "ambiguous params returns a bad request" do
-    with_routing do |set|
-      set.draw do
-        post ':action', to: ::UrlEncodedParamsParsingTest::TestController
-      end
+    with_test_routing do
       post "/parse", "foo[]=bar&foo[4]=bar"
       assert_response :bad_request
     end