2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/95587In this note we stress the necessity of a careful check of both the theoretical arguments and the numerical experiments used by Lopez-Caniego et al. (2005) to support the superior performances of the biparametric scale adaptive filter (BSAF) with respect to the classic matched filter (MF) in the detection of sources on a random Gaussian background.three pages, no figuresAstrophysicstext