In their theory Meyer, Klein and Wedell consider the electronic stopping in an insufficient way, since both the nuclear and electronic energy loss in a single collision are assumed to be proportional to the square of the scattering angle. This assumption, however, is only fulfilled for the nuclear energy loss (in the small-angle approximation). In this paper, energy-angle distributions are calculated using more realistic distributions for the electronic energy loss-a Gaussian distribution and a distribution, calculated by means of the Landau-Vavilov equation and Firsov's formula for the electronic energy loss in a single collision.