An incandescent electric lamp includes a bulb, current-conductor wires, a filament having turns arranged in spiraling fashion around an axis of revolution, one end of the filament being connected to a conductor wire, a metal support connected to the other conductor wire and to the other end of the filament, and a metal bracket which is in electrical contact with one of the ends or one of the turns of the filament and which comprises a portion parallel to the axis of revolution of the filament and situated below the filament when the lamp is in its normal operating position. The metal bracket is, for example, at the potential of the end. At the end of lamp life, the filament sags and comes into contact with the metal bracket, thus causing a short-circuit and a breaking of the filament, which prevents an explosion of the lamp.