  We discuss, how planned measurements at KLOE-2 of the (pi^0 -> gamma gamma)
decay width and the (gamma^* gamma -> pi^0) transition form factor can improve
estimates for the numerically dominant pion-exchange contribution to hadronic
light-by-light scattering in the muon g-2 and what are the limitations related
to the modelling of the off-shellness of the pion.
