  We consider next-to-minimal supersymmetric standard model (NMSSM) which has a
gauge singlet superfield. In the scale invariant superpotential we do not have
the mass terms and the whole Lagrangian has an additional $Z_3$ symmetry. This
model can have light scalar and/or pseudoscalar allowed by the recent data from
LHC and the old data from LEP. We investigate the situation where a relatively
light charged Higgs can decay to such singlet-like pseudoscalar and a $W^\pm$
boson giving rise to final state containing $\tau$ and/or $b$-jets and
lepton(s). Such decay evades the recent bounds on charged Higgs from the LHC.
According to our PYTHIA-FastJet based simulation such a scenario can be probed
with early data of 10 fb$^{-1}$ at the LHC center of mass energy of 13 and 14
TeV.
