Oh I don't think it's bad at all, just that in a toss up between the two it'd be better to include it - particularly given the chance of it being brought up in interviews. Having to then admit there's another employment you didn't include might not be the best optics.
I guess I have to state the obvious: you won’t get questioned during an interview about a two-month gap on your resume. If you do, I would question the interviewers intentions and run , far away from him.