Both my employer and i made contributions to my HSA for 2018. I put in $6430 and my employer put in $520. On form 8889 it shows $0 on line 13, not $6430?

Box 12B on my W2 shows $6950.  $520 of that was my employer and $6430 of that was my contribution.  On my 2018 form 8889, it shows $0 on line 13, but on my 2017 form 8889 it shows the amount of my contribution which was $6,210.  Shouldn't form 8889 for 2018 show $6430?