  The goldstino-matter interactions given by the Goldberger-Treiman relations
can receive higher dimensional operator corrections of $ O(q^{2}/M^{2})$, where
$M$ denotes the mass of the mediators through which SUSY breaking is
transmitted. These corrections in the gauge mediated SUSY breaking models arise
from loop diagrams, and an explicit calculation of such corrections is
presented. It is emphasized that the Goldberger-Treiman vertices are valid only
below the mediator scale and at higher energies goldstinos decouple from the
MSSM fields. The implication of this fact on gravitino cosmology in GMSB models
is mentioned.
