No, you should not amend your 2016 return.  From the description you have provided, it appears you are saying that your actual tax return is correct from a calculation perspective.  Thus, there is no reason for you to amend your return as there are no tax changes to your return.  If the IRS did notice the discrepancy in your explanation and they wanted to follow-up on it, they would send you a notice and you could simply respond to the notice correcting your explanation.