  We contest the interpretation by Gavilano et al. (Phys.Rev.Lett. 90 (2003)
167202) of violation of the Curie law behavior of the paramagnetic
susceptibility at low temperatures by means of the quenching of the V4+-ion
moment. These results can be understood as caused by well-known conventional
phenomena like crystal-field interactions but with taking into account the
intra-atomic spin-orbit coupling for the V4+ ion.
