A device for binding a boot to a sports article, of the type including a retaining system through which the boot is fixed to the sports article with a possibility to move relative to the sports article, between a low position and a high position, of the type including a system for the elastic return of the boot toward its low position, and of the type in which the retaining system functions independently of the elastic return system, and in which the elastic return system is part of a pre-assembled unitary module.