  Non-observation of superpartners of the Standard Model particles at the early
runs of the LHC provide strong motivation for an $R$-symmetric minimal
supersymmetric Standard Model, or MRSSM. This model also comes with a pair of
extra scalars which couple only to superpartners at the tree level. We
demonstrate that in the limit when the $U(1)_R$ symmetry is broken, one of
these scalars develops all the properties necessary to explain the 750 GeV
diphoton resonance recently observed at the LHC, as well as the non-observation
of associated signals in other channels. Some confirmatory tests in the
upcoming LHC runs are proposed.
