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We investigate the effect of gravitational lensing, produced by linear density perturbations, for anisotropies of the Cosmic Background Radiation (CBR) on scales of arcminutes. In calculations, a flat universe (\Omega=1) and the Harrison-Zel'dovich spectrum (n=1) are assumed. The numerical results show that on scales of a few arcminutes, gravitational lensing produces only negligible anisotropies in the temperature of the CBR. Our conclusion disagrees with that of Cay\'{o}n {\it et al.} who argue that the amplification of \Delta T/T on scales \le 3' may even be larger than 100\%

Gravitational lensing and anisotropies of the cosmic background radiation on small angular scales