diff --git a/activerecord/test/cases/migration_test.rb b/activerecord/test/cases/migration_test.rb
index 3181f27bc29f..03ee8dcf3c38 100644
--- a/activerecord/test/cases/migration_test.rb
+++ b/activerecord/test/cases/migration_test.rb
@@ -1109,8 +1109,7 @@ def test_only_loads_pending_migrations
       ActiveRecord::Migrator.up(MIGRATIONS_ROOT + "/valid", 1)
 
       # now unload the migrations that have been defined
-      PeopleHaveLastNames.unloadable
-      ActiveSupport::Dependencies.remove_unloadable_constants!
+      Object.send(:remove_const, :PeopleHaveLastNames)
 
       ActiveRecord::Migrator.migrate(MIGRATIONS_ROOT + "/valid", nil)