A method and a device for controlling the lane-keeping of a motor vehicle, wherein the motor vehicle has a lane-keeping assistant with at least the states inactive and active, which lane-keeping assistant is used to keep the vehicle in the driver's own lane. The method includes checking whether the vehicle has drifted into the opposite lane; checking whether there is opposing traffic in the opposite lane; activating the lane-keeping assistant if the vehicle has drifted and there is opposing traffic; controlling the lane-keeping assistant with respect to the oncoming object by active steering intervention, wherein the oncoming vehicle is interpreted as a lane boundary of the driver's own lane.