A recent hypernetted chain study has yielded molecular correlations functions of a nonaqueous electrolyte solution. In the present paper these functions are taken to calculate small-angle neutron scattering intensities of this solution in the framework of the so-called "contrast-approximation" commonly used for the interpretation of this kind of experiments. A comparison of this result to a rigorous calculation of the total scattering cross section reveals serious inconsistencies, even at very small scattering angles. Therefore the question is raised as to whether the contrast approximation can give a realistic description of small-angle scattering data.