Built-in lock that includes a handle with a lever and a spindle; an operating mechanism for converting the rotation of the handle into a translation of a locking slat and a base, whereby the operating mechanism is held fast by a clamping plate that is movable in the axial direction of the spindle, whereby the clamping plate is provided with a bearing for the rotation of the handle, whereby this bearing is held fast in the clamping plate in the axial direction and whereby this bearing is provided with a clip mechanism to lock the spindle in the axial direction with respect to the bearing in the mounted situation.