The talk will be based on arXiv:1304.5437. I will discuss the mixing effects in the CP-even scalar sector of the NMSSM on the SM-like Higgs mass in moderate and large $\tan\beta$ regime. These effects can give 6-8 GeV positive correction to the SM-like Higgs mass for a wide range of the singlet-like scalar masses consistent with the LEP bounds. A striking signature of this mechanism can be a light scalar with strongly suppressed (enhanced) branching ratios to $b\bar{b}$ ($gg$, $c\bar{c}$, $\gamma\gamma$) as compared to the SM Higgs. The $\gamma\gamma$ decay channel is particularly promising for the search of such a scalar at the LHC. The 125 GeV scalar can, thus, be accommodated with substantially smaller than in the MSSM radiative corrections from the stop loops (and consequently, with lighter stops) also for moderate or large $\tan\beta$, with the mixing effects replacing the standard NMSSM mechanism of increasing the tree-level Higgs mass in the low $\tan\beta$ and large $\lambda$ regime, and with clear experimental signatures of such a mechanism.
