I took a 401k distribution but was > 55 and withdrew same year as terminated. I was charged penalty but should not have been.

My understanding is that if I was at least 55 in 2016 and withdrew the 401k distribution in the same year, that I would not incur the 10% penalty but it seems to have been charged (TurboTax).  Do I need to do something in TurboTax to undo this penalty?