A safety module for a motor vehicle includes at least one inflatable cushion with a first fixation interface and at least one actuating device. The at least one actuating device includes an igniter and an igniter support. The igniter has a plastic overmolding forming a second fixation interface. The igniter support has a third fixation interface designed to receive and fix the second fixation interface. The at least one actuating device retains the first fixation interface by sandwiching it between at least one part of the second fixation interface and at least one part of the third fixation interface.