  The potential of the closed bosonic bulk tachyon is investigated using
$\mathcal{N}~=~1$ closed superstring field theory formulated around Berkovits'
and Vafas embedding of the bosonic string into the superstring. From this point
of view the bosonic minimum gets destabilized by new deformations of the
underlying CFT. Another critical point of the potential is identified by
solving the equation of motions and the properties of this new solution are
discussed.
