  We recently published velocity measurements of luminous globular clusters in
the galaxy NGC1052-DF2, concluding that it lies far off the canonical stellar
mass - halo mass relation. Here we present a revised velocity for one of the
globular clusters, GC-98, and a revised velocity dispersion measurement for the
galaxy. We find that the intrinsic dispersion $\sigma=5.6^{+5.2}_{-3.8}$ km/s
using Approximate Bayesian Computation, or $\sigma=7.8^{+5.2}_{-2.2}$ km/s
using the likelihood. The expected dispersion from the stars alone is ~7 km/s.
Responding to a request from the Editors of ApJ Letters and RNAAS, we also
briefly comment on the recent analysis of our measurements by Martin et al.
(2018).
