1098 Box 2 is negative, what do I enter?

Hi.  My HELOC 1098 has a negative number in box 2.  I had overpaid when I was paying down my HELOC balance to 0 last December.  Box 2 shows  -18.62 

 

TT only likes 1.00 and greater.  Should I just use 1.00??

 

Thanks