(5)To ensure a prudent approach and enable competent authorities to review extensions of, and changes to, the use of alternative internal models, or changes to the subset of the modellable risk factors, before they are implemented, institutions should notify their competent authority of such non-material extensions and changes at least four weeks before implementation. However, that notice period should not apply to cases where institutions fail to meet the condition set out in Article 325bc(2), point (a), of Regulation (EU) No 575/2013. In such cases, institutions should have the possibility to take immediate action to restore compliance with the regulatory requirements, but should also duly and promptly notify competent authorities before implementing this change.