Mayotte, a French island located in the Indian Ocean, has always striven for maintaining its cultural identity and particularly its Islamic customary law. In order to prepare the department status, the legislator first imposed constitutional values, among others by changing the personal status and by suppressing the cadi courts. Since then, Mayotte has been integrated into the national plan for training in the French republican values and a new form of reconciliation between universal and singular values is gradually emerging. However, to avoid the failing of those singular values, priority attention needs to be given in ensuring cadi’s key role as a mediator and, also, in providing support to the matriarchal tradition by giving women some special status. It is also necessary to ensure that all constitutional principles are implemented in Mayotte.