  We consider the gamma-ray spectrum from neutralino dark matter annihilations
and show that internal bremsstrahlung of W pair final states gives a previously
neglected source of photons at energies near the mass of the neutralino. For
masses larger than about 1 TeV, and for present day detector resolutions, this
results in a characteristic signal that may dominate not only over the
continuous spectrum from W fragmentation, but also over the \gamma-\gamma and
\gamma-Z line signals which are known to give large rates for heavy
neutralinos. Observational prospects thus seem promising.
