The present invention relates to an interior trim component for a motor vehicle, in particular a dashboard, adapted for covering an airbag. The trim component is adapted to break along a main weakening line during deployment of the airbag, said trim component comprising an inside area relative to the main weakening line which defines a flap intended to extend over the airbag. The trim component comprises a notched element comprising a plurality of disjoint notches following one another along the main weakening line and having a generally concave shape relative to the inside area.