Neutron-diffraction results on single crystalline UFe₄P₁₂ are reported. The structural parameters of UFe₄P₁₂ have been determined at 15 K. Below 3.1 K, we find that there is an additional magnetic contribution on top of nuclear reflections at higher d spacings. An intensity analysis of the magnetic contributions corroborates a ferromagnetic ground state with U moments only. It is argued that this compound forms three magnetic domains with an upper limit of about 0.5 μ_B (at 2.8 K) for the U moment.