Comparison between the galaxy stellar mass function of XXL-N field galaxies in the redshift range 0.2–0.4 and the stellar mass function derived in Moustakas et al. (2013) in the same redshift range. The original normalisation of Moustakas et al. (2013) was maintained and the values of the GSMF of XXL-N field derived in this work are scaled to theirs in the common mass range (see text). The survey is more sensitive to low-mass galaxies, but is smaller than XXL-N and does not probe the high-mass end of the galaxy population.