2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/187554The aim of this comment is to call to the attention of DSR readers a basic fact. The introduction of noncommutative structures in problems like the one addressed in [1] is not necessary for the understanding of DSR physics. It can be described just as the relativistic free particle problem in a different parametrization.3 pages. Accepted in PRD. v2 Fixed typos, reference added, version for PRDHigh Energy Physics - TheoryGeneral Relativity and Quantum CosmologyMathematical PhysicsDSR and Canonical Transformations: A Comment on a ``A Lagrangian for DSR particle and the role of noncommutativity''text