  In their recent paper [S\"oderlind, P. et al., Sci. Rep. 5, 15958 (2015)],
S\"oderlind et al. discuss two subjects from a theoretical point of view: the
phonon spectra and the possible magnetic structure of {\delta}-plutonium (Pu).
Here, we comment on the second subject. S\"oderlind et al. compare the Pu
magnetic form factor F(Q) calculated via density functional theory (DFT) with
measurements of F(Q) by neutron spectroscopy [Janoschek, M. et al., Sci. Adv.
1, e1500188 (2015)]. In particular, this comparison does not consider a number
of experimental facts established in the neutron spectroscopy study.
