The hydrogen uptake characteristics of a mechanically milled Ti-Mg-Ni sample processed in accord with that of Lomness et al. [Hydrogen uptake characteristics of mechanically alloyed mixtures of Ti-Mg-Ni. Int J Hydrogen Energy 2002; 27: 915-20] has been shown to rapidly absorb 2.5 wt% of hydrogen at 296 K. This is significantly less than the 11 wt% presented by Lonmess et al. but occurs at a lower temperature. X-ray diffraction shows that our ball-milled sample comprises low crystallinity elemental Ti, Mg and Ni which converts to Ti2Ni, Ti and Mg during temperature cycling. Examination of the hydrided sample shows the presence of Ti2NiHx (x > 0.5), TiHy (0.7 < y < 2) and MgH2. Unidentified minor phases are also present. (c) 2006 International Association for Hydrogen Energy. Published by Elsevier Ltd. All rights reserved.