Article L312-91 of the French Consumer Code
If the credit agreement so provides, the lender has the option of terminating the open-ended overdraft authorisation subject to at least two months’ notice being provided to the borrower on paper or on another durable medium. In the event of a legitimate reason, such termination may be effected without notice, in which case the lender shall provide the borrower with the reasons, if possible prior to termination. .