The invention relates to an adjusting system for a vehicle seat, wherein the adjusting system includes a bottom rail that is attached to the vehicle, a top rail that can be rigidly attached to the seat and that can move along the bottom rail, and a memory module that is attached alternately to the seat or to the vehicle and that can move along the bottom rail. The memory includes a movable safety catch for forming a positional locking mechanism with the bottom rail, and a means for forming a positional locking mechanism with a movable seat-mounted control lever. The safety catch can be actuated by the seat-mounted control lever and is mounted in a cam-controlled manner so as to be able to rotate in an open bearing.