Refusal to fulfil the condition

Insofar as, due to a defect of title or a defect in the donated thing, the value of the disposition does not reach the amount of the expenses required to fulfil the condition, the donee is entitled to refuse to fulfil the condition until the deficit caused by the defect is made up for. If the donee fulfils the condition without knowledge of the defect, then the donee may demand from the donor reimbursement of the expenses caused by fulfilment to the extent that, as a result of the defect, they exceed the value of the disposition.