  In light of the recent observation of the Fermi-LAT 130 GeV gamma-ray line,
we suggest a model of scalar dark matter in hidden sector, which can decay into
two (hidden) photons. The process is radiatively induced by a GUT scale fermion
in the loop, which is charged under a hidden sector U(1), and the kinetic
mixing ($\sim \epsilon F^{\mu\nu}F'_{\mu\nu}$) enables us to fit the required
decay width for the Fermi-LAT peak. The model does not allow any dangerous
decay channels into light standard model particles.
