diff --git a/activerecord/test/cases/forbidden_attributes_protection_test.rb b/activerecord/test/cases/forbidden_attributes_protection_test.rb
index d89045cebf90be360f18b98d4f7076bd9a6206c9..91921469b8be3d163fc1ded4116955435b2453d4 100644
--- a/activerecord/test/cases/forbidden_attributes_protection_test.rb
+++ b/activerecord/test/cases/forbidden_attributes_protection_test.rb
@@ -1,7 +1,11 @@
 require 'cases/helper'
 require 'active_support/core_ext/hash/indifferent_access'
-require 'models/person'
+
 require 'models/company'
+require 'models/person'
+require 'models/ship'
+require 'models/ship_part'
+require 'models/treasure'
 
 class ProtectedParams
   attr_accessor :permitted