TurboTax wants to attach Form 8990 because it thinks my business owns a pass-through entity with excessive interest expense.

I'm trying to e-file an 1120 return for my small C-Corp. TurboTax says:

"Attachment Needed - Form 8990

Since you indicated the business owns a pass-through entity with excessive interest expense, you must attach Form 8990 when you e-file your tax return."

The problem is the business doesn't own a pass-through entity and I can't find where to correct this. Where is this question asked?

Thanks!