  We calculate contributions to the one-loop renormalization in the spinor
sector of the minimal Lorentz-violating extended QED in the second order in
Lorentz-breaking parameters. From the renormalizability viewpoint, we show that
the inclusion of some of the Lorentz-breaking terms in the model is linked to
the presence of others. We also demonstrate that the Ward identities are
satisfied up to this order.
