(55)This Directive does not prevent Member States from adopting or maintaining in force more stringent provisions in the field covered by this Directive to further facilitate the exercise of shareholder rights, to encourage shareholder engagement and to protect the interests of minority shareholders, as well as to fulfil other purposes such as the safety and soundness of credit and financial institutions. Such provisions should not, however, hamper the effective application of this Directive or the achievement of its objectives, and should, in any event, comply with the rules laid down in the Treaties.