Some mathematical errors are identified about the published equation coefficients of Kai and coworkers [Fluid Phase Equilibria 360 (2013) 466-471] for correlating the solubility data of L-malic acid in pure and binary mixtures using the three models. In addition, some other flaws were found regarding their calculation of the standard enthalpy of solution (Delta H-sol(o)) and the standard entropy of solution (Delta S-sol(o)) about L-malic acid dissolved in pure and mixed solvents by the famous van't Hoff equation. (C) 2017 Published by Elsevier B.V.