In [H.W. Gomez, H.S. Salinas and H. Bolfarine, Generalized skew-normal models: Properties and inference, Statistics 40(6) (2006), pp. 495-505] introduces a new family of asymmetric distributions that depends on two parameters called, and , such as for the particular case = 0 obtained skew-normal distribution. In this note we give a corrected version for the expression that is used in calculating the moments of such distribution.