An apparatus for helping to protect an occupant of a vehicle includes a curtain airbag inflatable from a stored condition to a deployed condition in which the curtain airbag is positioned between a side structure of the vehicle and the vehicle occupant. The curtain airbag comprises a mounting tab comprising overlying layers of airbag material that define a pocket and through each of which a mounting tab aperture extends. A bracket comprises a plate with a bracket aperture extending therethrough. The bracket is positioned in the pocket so that the bracket aperture is aligned with the mounting tab apertures. A fastener has a portion extending though the mounting tab apertures and the bracket aperture. The fastener blocks the bracket from removal from the pocket.