A window lift for a motor vehicle contains a functional support for at least one guide rail, which slidably guides a rail slider for retaining a vehicle window, and a cable drive device. The cable drive device has an actuating drive and a cable drive housing, into which a cable drum, which can be coupled to the actuating drive and can be rotated about an axis of rotation, is or can be received, around which cable drum a pull cable is or can be wrapped. The cable drive housing has a bottom plate and a number of cylindrical wall elements for receiving the cable drum. The functional support has, at the periphery of a through-opening for the coupling of the cable drum to the actuating drive, a joining contour for establishing a form-locking connection to the cable drum housing when the cable drum is inserted therein.