A holder for securing a leaf of a hinge to a steel door frame has a first U-shaped housing part having two end walls, a bight wall connecting the two end walls, and respective mounting flanges projecting from the end walls and securable to the door frame. A complementarily second housing part defines a cavity with the first housing part and has a cover plate, a pair of end plates having outer faces bearing on inner faces of the end walls, and a front plate extending between the end plates and from a front edge of the cover plate and formed with a cutout through which a hinge leaf can extend into the cavity. A clamp in the cavity can secure the hinge leaf to the housing parts. There is a snap connection between the front plate and the first housing part.