A device (100) for driving fastening elements into a substrate, having a combustion chamber (160) in which a fuel can be burned for the purposes of transmitting energy to a fastening element, having a cartridge bearing (120) which has a receiving chamber (130) for a cartridge (170) which contains the fuel, which receiving chamber is open in an opening direction toward the combustion chamber (160), having a closure (190) which, in a closed position of the closure (190), closes the receiving chamber (130) counter to the opening direction and bears against the cartridge bearing (120), and having a strip leadthrough, which defines a transport direction and opens into the receiving chamber (130), for a cartridge strip (200) which bears the cartridge (170).