  We discuss an initial condition on the superpotential couplings of an SU(5)
theory which allows the R-violating term L d^c Q but avoids the simultaneous
presence of L L e^c + d^c d^c u^c. This same condition keeps under control the
products of pairs of different couplings lambda_{ijk} L_i d^c_j Q_k, which are
more strongly constrained by flavour-changing-neutral-current limits. In our
view, this observation makes relatively more plausible the interpretation of
the high-Q^2 Hera anomaly, if real, as caused by squark production.
