Cassel was annexed to France the following year under the terms of the Treaty of Nijmegen, which ended the war. The annexation led to the town's defences being dismantled; it was considered indefensible, as it was within easy firing range of the nearby Mont des Récollets, and it would have cost far too much to fortify both hills. In addition, the revised frontier following the treaty was now a significant distance from Cassel and without the proximity of the border, the town was no longer seen as having much strategic significance.