  The Generalized Uncertainty Principle (GUP) has been directly applied to the
motion of (macroscopic) test bodies on a given space-time in order to compute
corrections to the classical orbits predicted in Newtonian Mechanics or General
Relativity. These corrections generically violate the Equivalence Principle.
The GUP has also been indirectly applied to the gravitational source by
relating the GUP modified Hawking temperature to a deformation of the
background metric. Such a deformed background metric determines new geodesic
motions without violating the Equivalence Principle. We point out here that the
two effects are mutually exclusive when compared with experimental bounds.
Moreover, the former stems from modified Poisson brackets obtained from a wrong
classical limit of the deformed canonical commutators.
