diff --git a/railties/test/generators/app_generator_test.rb b/railties/test/generators/app_generator_test.rb
index ff69366875db2597b94343e8ac3dc3cc5a07c6ba..87773fd6b9266e979f778d15ec52479fd817527e 100644
--- a/railties/test/generators/app_generator_test.rb
+++ b/railties/test/generators/app_generator_test.rb
@@ -56,6 +56,7 @@
   config/initializers/assets.rb
   config/initializers/backtrace_silencers.rb
   config/initializers/cookies_serializer.rb
+  config/initializers/content_security_policy.rb
   config/initializers/filter_parameter_logging.rb
   config/initializers/inflections.rb
   config/initializers/mime_types.rb