  In a recent letter ({\it{EPL}}, {\bf{104}} (2013) 60003; see also {\it
{arXiv:1309.5645}}), Plastino and Rocca suggest that the divergences inherent
to the formulation of nonextensive statistical mechanics can be eliminated {\it
{via}} the use of $q$-Laplace transformation which is illustrated for the case
of a kinetic Hamiltonian system, the harmonic oscillator. The suggested new
formulation raises questions which are discussed in the present comment.

Statistical Mechanics