A locking device and method for locking the locking device includes a lock for a door or a hatch for a hood of a motor vehicle. The lock having includes a locking mechanism that has a rotary latch and at least one pawl for blocking the rotary latch. The locking device includes a drive which allows the locking mechanism to be moved in such a way that a door gap or hatch gap can be narrowed in the closed state of the door or hatch. The lock is an electric lock that includes an electric drive which allows the locking mechanism to be brought into the main blocking position of the locking mechanism and/or allows the lock to be opened.