2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/196100In the paper Phys. Lett. B614 (2005), 140-142, F. Nasseri shows that the values of the fine structure constant reduces due to the presence of a cosmic string. In this comment I want to point out that this conclusion is not completely correct in the sense that the result obtained is valid only in a very special situation.Accepted for publication in Physics Letters BHigh Energy Physics - TheoryGeneral Relativity and Quantum Cosmologytext