  We investigate the interferometric scheme put forward by Tan, Walls and
Collett [Phys. Rev. Lett. {\bf 66}, 256 (1991)] that aims to reveal Bell
non-classicality of a single photon. By providing a local hidden variable model
that reproduces their results, we decisively refute this claim. In particular,
this means that the scheme cannot be used in device-independent protocols.
