A plastic cover element (10) for a driver airbag module having a side wall (22) extending from a lower end (22a) to an upper end (22b), enclosing an interior space. The upper end (22b) is covered by an overlap (30) which extends in a radial direction across the side wall (22) and in an axial direction back toward the lower end (22a) of the side wall (22), forming a screen section (32) extending generally parallel to the side wall. The outside surface of the overlap has at least one groove (40) to receive the sewn edge of a casing. An axial section (44) of the groove (40) extends into the lower end area of the screen section (32) and in the area of this axial section (44) and at least one reinforcing rib extends parallel to it between the screen section (32) and the side wall (22).