  We apply the method of ratios to search for geometrical scaling in the charm
production in deep inelastic scattering. To this end we use recent combined
data from H1 and ZEUS experiments. Two forms of geometrical scaling are tested:
originally proposed scaling which results from Golec-Biernat-Wusthoff model and
scaling motivated by a dipole representation which takes into account charm
mass. It turns out that in both cases some residual scaling is present and
charm mass inclusion improves scaling quality.
