An electric steering system includes a steering wheel and a first housing in which a steering shaft is arranged and rotatably mounted to a motor vehicle. A locking device is provided to lock the steering shaft at conclusion of a rotation as limitation of a steering angle input. The locking device includes a second housing which is connected in fixed rotative engagement with the first housing, and a locking bar configured for engagement in the steering shaft and arranged in the second housing such as to impact the steering shaft, when the steering shaft moves in relation to the second housing in the event of a crash, and to deform the first housing.