  It has been previously proven that the Kohn-Sham kinetic energy functional
scales homogeneusly under generalized coordinate scaling, in a way that is
obeyed by the von Weiz\"acker functional, but seems to be in contradiction with
the scaling of the Thomas-Fermi functional. A very puzzling situation, taking
in to account that the von Weiz\"acker and Thomas-Fermi functionals are exact
cases of the Kohn-Sham kinetic energy functional for two electron systems, and
the non-interacting electron gas, respectively. The apparent contradiction is
resolved in this paper.
