Abstract: A device for fixing a tile to a structure, for example a supporting structure or an intermediate structure of a building, the fixing device having a suspension comprised of a threaded rod and a safety hook, a first end of the threaded rod being arranged so as to be connected to the structure, the safety hook being made integral with a second end of the threaded rod by a nut system; a tube retained in the safety hook, and a fastening hook fixed by a rigid connection on a platelet, the platelet arranged so as to be fixed to one main face of the tile, the fastening hook extending in a direction substantially perpendicular to the platelet, a free end of said fastening hook being shaped so as to be placed resting on the tube. The invention also relates to an associated suspended ceiling and to making non-planar suspended ceilings.