If in any event specified in this Agreement referring to this Sub-clause the Borrower ought to prepay all or part of a Tranche or in the event of voluntary prepayment, the Borrower shall give at least a two (2) months prior written notice to the CEB (hereinafter, the “Prepayment Notice”) specifying the amounts to be prepaid, the date on which the prepayment will take place (hereinafter, the “Prepayment Date”) and, upon prior consultation with the CEB, the Prepayment Costs. The Prepayment Date shall fall on an Interest Payment Date, unless otherwise agreed in writing by the CEB.