  Recent work by Ishibashi, Maeda, and Mefford shows that the validity of the
QNEC is sensitive to the IR regulator that one uses to define the entropy and
its variations. In this note we discuss two general options that preserve both
the QNEC and a physically-sensible notion of entropy density. We illustrate the
application of each through an example. An important guiding principle is that
an IR regulator should have a physical interpretation.
