We have made extensive reciprocal space maps in the heavy-fermion superconductor URu₂Si₂ using high-resolution time-of-flight single-crystal neutron diffraction to search for signs of a hidden order parameter related to the 17.5 K phase transition. Within the present sensitivity of the experiment (0.007 \mu _B/U-ion for sharp peaks), no additional features such as incommensurate structures or short-range order have been found in the (h0l) or (hhl) scattering planes. The only additional low-temperature scattering observed was the well-known tiny antiferromagnetic moment of 0.03 \mu _B/U-ion.

PACS numbers: 74.80.--g, 75.25.+z