A device for exhaust-gas aftertreatment, having a first, tubular flow path, having a diverting region and having a second, annular flow path. The tubular flow path is formed by an inner pipe and the annular flow path is, by an outer pipe running substantially parallel to the inner pipe, formed between the inner pipe and the outer pipe, and the diverting region is designed to divert the exhaust-gas flow from the tubular flow path into the annular flow path. The device has an annular catalytically active substrate body and an annular particle filter, wherein the substrate body and the particle filter are arranged in the annular flow path.