If you discover an error after filing your return, you may need to amend your return. The IRS may correct mathematical, clerical errors on a return and may accept returns without certain required forms or schedules. In these instances, there's no need to amend your return.
I would not file an amended return for this small amount.
It's possible the IRS will catch this change and correct it. If they do they will send a notice to you with instructions.
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Topic No. 308 Amended Returns | Internal Revenue Service
