Fuel gas supply systems for an internal combustion engine having an electric compressor (40) with a flow housing (42) in which a compressor impeller is arranged, a throttle valve (22), an intake channel section (21) in which the throttle valve (22) is arranged, a bypass channel (38) in which the compressor (40) is arranged with its flow housing (42), and by means of which the intake channel section (21) can be bypassed, are known. Their manufacture and assembly is complicated and due to the limited available installation space, assembly in the internal combustion engine is also complicated. In order to simplify this, it is proposed that the flow housing (42) of the compressor (40) be designed as one piece with the intake channel section (21).