(18)In order to ensure that all collective investment undertakings displaying the characteristics of MMFs are subject to the new common rules on MMFs, the use of the designation ‘MMF’, or any other term that suggests that a collective investment undertaking shares the characteristics of MMFs, should be prohibited unless that undertaking is authorised as an MMF under this Regulation. To prevent circumvention of the rules in this Regulation, competent authorities should monitor the market practices of collective investment undertakings established or marketed in their jurisdiction to verify that they do not misuse the MMF designation or suggest that they are an MMF without complying with the new legal framework.