See https://github.com/symfony/symfony/pull/15025 ```diff $formBuilder ->add('name', 'text', array('label' => '...')) ->add(...) ->add('friends', 'collection', array( - 'type' => new FriendType(), + 'entry_type' => new FriendType(), - 'options' => array(...) + 'entry_options' => array(...) )) ; ``` This rule might be added, but I could not find it here. So please verify if we have it first. If not, it's should a new rule :slightly_smiling_face: