A device for the reduction of axial movement of the main shaft gears (2) in a transmission containing at least two countershafts. The main shaft gears (2) are held axially by two washer discs (3, 4) which is designed to be a pressing device (5, 6) on the main shaft (1) for at least one of the main shaft gears (2) against the washer disc (3) holding the main shaft gear (2) axially.