I'm speaking as an inventor here, not a lawyer. There are generally several if not many people associated with a technology that spawns a patent. The question of whether one of those people is considered an inventor goes directly to the claims. Did that person contribute the essential inventive step in at least one claim? If not, then they aren't the inventor. So the question is whether the correction provided the inventive step to one of your claims. Here is an example. I have a patent on an algorithm for analyzing real time PCR data. One of my colleagues suggested an alternative to a part of the algorithm. It was worthwhile to include the alternative in the specification and claims to keep someone from designing around the preferred implementation. Therefore, my colleague was included as a co-inventor. If that claim had been left out, then he wouldn't have been included as a co-inventor.
Now, I'm speaking specifically of whether someone should be considered an inventor on a patent. Whether there is any legal standing regarding providing inspiration or encouragement that may lead to an invention I can't say and will leave to one of the trained legal contributors to this site.