  We address comments in a recent paper by Glos et al.\ [CPC 235 (2018) 414,
arXiv:1801.01294] regarding a slowdown in the performance of our QSWalk.m
package for large matrix sizes. We show that the underlying issue has been
rectified in the most recent version of Mathematica. We recommend all users of
QSWalk.m to upgrade to version 11.3 or above.
