Very recently, Privat et al. decided to add the nitrogen group to the PPR78 model. However, during the writing of their paper, new VLE data were published on three binary systems containing nitrogen: N-2 + methane, N-2 + ethane, N-2 + and n-decane (new data on the ethane + methane system were also published). In this research note, the capability of the PPR78 model to predict these data along with two ternary systems involving nitrogen, methane, ethane, and n-decane is checked. Comparison with two other predictive models, VTPR and PSRK, is also performed.