diff --git a/railties/test/generators/app_generator_test.rb b/railties/test/generators/app_generator_test.rb
index cc0bd53639cdda2696c3700f7f45d074ba2ca1fa..5175a6e2e61cac2321b2e05da322e4494e3c1677 100644
--- a/railties/test/generators/app_generator_test.rb
+++ b/railties/test/generators/app_generator_test.rb
@@ -66,8 +66,7 @@ def test_invalid_application_name_is_fixed
   end
 
   def test_application_new_exits_with_non_zero_code_on_invalid_application_name
-    # TODO: Suppress the output of this (it's because of a Thor::Error)
-    `rails new test`
+    silence_stderr { `rails new test` }
     assert_equal false, $?.success?
   end