  We compute the leading logarithmic radiative corrections to the lightest
Higgs mass in the NMSSM involving the electroweak gauge couplings and in the
NMSSM specific Yukawa couplings lambda and kappa (including all mixed
combinations), which are induced by chargino, neutralino and Higgs boson loops.
The effect of the NMSSM specific Yukawa couplings lambda and kappa is to
increase the upper bound on the lightest Higgs mass by up to ~2 GeV, but they
can also decrease the lightest Higgs mass by up to ~-20 GeV.
