In order to reduce undesired effects of motor drag moments (MSM) on the braking behaviour of a motor vehicle fitted with an anti-lock braking system, the braking slip (μ1,2) of the driven wheels is detected independently of any brake actuation. With a rotation behaviour of the driven wheels (VL, VR) which is typical for the action of motor drag moments (MSM), especially with a brake slip (μ1,2) at these wheels (VL, VR) above a limit, the braking pressure in the wheel brakes of the driven wheels (VL, VR) is kept constant or reduced or, if the braking process has not yet begun, the control of braking pressure into the wheel brakes of the driven wheels is eliminated.