  A further argument is provided in the discussion on the correct form of the
bound-state momentum wave function of the quasi-one-dimensional hydrogen atom;
namely, considering its behavior at the large quantum indices, it is
reconfirmed that the complex expression from Olendski (2017) {\it Eur. J.
Phys.} {\bf 38} 038001 is a correct one. Groundlessness of other
interpretations is also highlighted.
