A wiper blade is proposed, which is used to clean motor vehicle windows. The wiper blade has an elastic, elongated load bearing element for an elongated wiper strip, made of a flexible material, that can be pressed against the window to be washed, which strip, on its long sides, has longitudinal grooves facing one another, in which spaced-apart longitudinal rails of the load bearing element are located, whose middle portion has a connection device for a driven wiper arm, and the cross section of the two longitudinal rails decreases from its middle region out toward the ends of the rails. A wiper blade that is especially easy to mount is obtained if the load bearing element takes the form of a hairpin, the two legs of which form the longitudinal rails, and the free ends of the two longitudinal rails are held together, in particular being joined together, by stabilizing means embodied as a separate component.