A hidden defect or a vice caché is something which renders a product or good unfit purpose. The purchaser benefits from statutory protection provided that the purchaser was not in a position to become aware of the defect at the time of the purchase. French law makes a distinction between

specialist and non-specialist purchasers in regard to the product in question. If the court finds that there is a hidden defect, the contract of sale can be rescinded or the price reduced.