  The present paper clarifies how to consistently take into account the
contribution of magnetic charges in the generalized Smarr mass formula by using
properly the Tomimatsu's representation of Komar integrals. It is shown in
particular that in all three examples of the dyonic solutions considered by us,
the sum of the two electromagnetic terms in Smarr's formula can be cast into
the form $\bar{\cal Q}\Phi^H_{ext}$, where ${\cal Q}$ is the complex charge and
$\Phi^H_{ext}$ the complex extension of the electric potential.
