Mayotte became an overseas department of France ("département d'outre-mer", DOM) on 31 March 2011 following the result of the March 2009 Mahoran status referendum, which was overwhelmingly approved by around 95% of voters. Becoming an overseas department will mean it will adopt the same legal and social system as used in the rest of France. This will require abandoning some customary laws, adopting the standard French civil code, and reforming the judiciary, educational, social and fiscal systems, and will take place over a period of about 20 years.