Background Check

Hey guys, I got an offer for a job and went through a background check. All the information was correct except I did botch some of the employment dates I provided, an honest mistake. Four years ago I actually worked at a company for two months but I put on my background I was there for six months. Two years ago I actually worked at a company for a year and 9 months, but I put on my background I was there for a year and a half.

Kinda worried this might have an impact on the offer, what do you guys think will be the outcome and/or what should I do at this point?

Thanks

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