A pyrotechnic charge for a pyrotechnic gas generator includes a plurality of blocks made of pyrotechnic material stacked in layers, each block being defined by two main faces that are substantially orthogonal to the stacking direction. In this pyrotechnic charge, each layer of the stack includes at least two distinct blocks of pyrotechnic material, each forming an angular sector of a ring or of a disk, the blocks being assembled together to form a ring and/or a disk.