  The effect of axial meson exchange on extraction of proton electromagnetic
form factors in $ep$ scattering is calculated. Taking as an example $f_1(1285)$
meson exchange, it is quantitatively shown how it affects Rosenbluth and
polarization transfer methods. The contribution of an axial meson is negligible
in comparison with the traditional box-type two photon exchange and could not
be responsible for difference of form factors extracted by different
techniques. However, results support the idea that meson exchange could explain
deviation of individual polarizations.
