  We revisit homogenisation theory for Friedrichs systems. In particular, we
show that $G$-compactness can be obtained under severely weaker assumptions
than in the original work of Burazin and Vrdoljak (2014). In this way we extend
the applicability of $G$-compactness results for Friedrichs systems to
equations that yield memory effects in the homogenised limit and detour any
usage of compactness techniques previously employed.
