An improved EAM alloy potential describing properties of several phases of the Ni-Al system. Obtained by crossing the previously developed EAM potentials for pure Ni and Al (Y. Mishin, D. Farkas, M.J. Mehl, and D.A. Papaconstantopoulos, "Interatomic potentials for monoatomic metals from experimental data and ab initio calculations," Phys. Rev. B 59, 3393 (1999)). The potential has been tested for many properties, including the melting temperatures of several phases.