Form 8889 Confusion

So I was not aware that I am not allowed to contribute to my HSA unless I have an HDHP, which I did not have last year.  As a result, I now need to withdraw the funds listed on line 12 of my W2, but the problem I'm running into is TurboTax wants me to choose what type of HDHP plan I had last year.  While entering my information I put that I did not have an HDHP last year, so how do I get around this?