Immigration Mistake...Maybe

We may have made a mistake on our I-600A form that we submitted back in June to immigration. We're sending a letter and an email to them to try and get it corrected if it is an issue. The mistake involves one place on the form where it said to include Shannon's maiden name, which we did, but we didn't put "Hedges" after her maiden name. We're hoping it either won't be a big deal or that they will fix it for us. But it's the goverment, so we're kinda worried.