2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/143304In this paper we deal with the uniqueness of the Lorentzian helicoid and Enneper's surface among properly embedded maximal surfaces with lightlike boundary of mirror symmetry in the Lorentz-Minkowski space L3.Corrected gap in the proof of former Corollary 5.1Differential Geometry53C50text