  We consider $\gamma$-ray emission from heavy nuclei that are accelerated in
the shocks of stellar winds and are excited in interactions with the ambient
matter in the Orion complex. We show that the recent detection of $\gamma$-ray
lines in the Orion complex by COMPTEL telescope can be explained by such a
scenario, assuming cosmic abundances. The scenario is consistent with recent
models of cosmic ray acceleration in stellar winds of massive stars.
