The neutron diffraction structure factors for three isotopic compositions of Fe₄₀Ni₄₀B₂₀ have been determined. These structure factors seemed to be affected by the presence of small amounts of hydrogen in the specimens. From the three total structure factors three partial structure factors and three partial reduced radial distribution functions were obtained. The metal-metal partials were found to be identical. The metal-metalloid partials showed a pronounced splitting of the first RDF peak and distinct differences between G_FeB(r) and G_NiB(r). The results are compared with the literature data for the binary glasses Fe₈₀B₂₀ and Ni₈₁B₁₉.