  The bound-state problem for an uncharged massive scalar particle in the field
of a naked Reissner-Nordstr\"om singularity is approached by means of the
quasiclassical Bohr-Sommerfeld quantization. An approximate analytical
expression for the energy levels of the system is derived. It is shown that in
order to obtain non-vanishing binding energies the masses of both the central
object and the particle should be comparable with the Planck mass.
