The drastic changes in magnetic properties of amorphous PrNi5 as compa
red with the paramagnetic crystalline analogue have been observed. Non
linear magnetization curves and change of the sign of curvature in the
Belov-Arrott plots give evidence of a ferromagnetic transition in the
amorphous PrNi5. The experimental results are discussed in the framew
ork of the phenomenological model of the crystalline field effects in
amorphous PrNi5.