A straw walker for a combine harvester includes a straw walker grate provided with through-openings for grain to be separated and with driving profiles arranged along the straw walker grate at a mutual distance from one another. The driving profiles extend transversely to the conveying direction and include a first respective profile limb upwardly protruding from the straw walker grate. In order to provide advantageous conveying conditions, the driving profiles also include a second respective profile limb descends in the conveying direction towards the straw walkers grate. The second respective profile limb is provided between the first respective profile limb and the straw walker grate on the breast side of the driving profiles. The breast side of the driving profiles is at the rear of the driving profiles in the conveying direction.
