The decays of the SM-like Higgs boson h → Zγ in the 3-3-1 model with inverse seesaw neutrino masses (331ISS) proposed in T. Phong Nguyen, et al., Phys. Rev. D 97, 0973003 (2018), are discussed. They were using well-known general results in L.T. Hue, et al., Eur. Phys. J. C 78, (2018) 885, analytic formulas for one-loop contributions are constructed. We will show that new particles predicted by the model under consideration may have significant effects on the above-mentioned decay channel of the SM-like Higgs boson. From numerical investigation, some details and properties of the decay are presented. They may be useful for comparing with the experimental results that could be detected in the future.