  We study the simultaneous effect of finite volume and finite lattice spacing
corrections in the framework of chiral perturbation theory (ChPT) in the
epsilon regime, for both the Wilson and staggered formulations. In particular
the finite volume corrections to the low energy constants (LECs) in Wilson and
staggered ChPT are computed to next-to-leading order (NLO) in the
\epsilon-expansion. For Wilson with N_f = 2 flavours and staggered with generic
N_f the partition function at NLO can be rewritten as the LO partition function
with renormalized effective LECs.
