After you file

My wife's 1099-R is from her Merrill-Lynch retirement account. I have always reported it as a 1099-R account. BY MISTAKE I answered TURBO TAX questions as if she had inherited this specific 1099-R. It was my error calling this as inherited money. A foolish senior moment. Thank you for your prompt answer. The value is for a measly $3341. Should I just pay for the modest amount of tax, instead of filling an amendment?