An apparatus for buffering objects having at least one first conveyor and at least one second conveyor, where objects enter the apparatus via the first conveyor and leave the apparatus via the second conveyor. Along a linear guide, a transfer device can be moved parallel to first and second conveyor to transfer objects from the first conveyor to the second conveyor. A control means unfolds and/or retracts a rail extending on at least one side of the first and/or second conveyor, dependent on the position of the transfer device.