AMT dep allowed/allowable is too large

I sold a vehicle last year that I used for business. When I got to the review part of turbo tax, 2 lines on the car and truck expenses worksheet were flagged for errors under the disposition of vehicle section: lines 51 & 52 about depreciation allowed or allowable and then AMT depreciation allowed or allowable. The amount written on both of those lines is the same as the prior depreciation in the section above- 2,719. I did not enter this amount anywhere; turbotax calculated it for me. So I assume it is right. I've used turbo tax every year I had the vehicle and all the information was in there. Now it is flagged because "AMT dep allowed/allowable is too large.... cannot exceed business basis." I'm thoroughly confused and have no idea how to fix it. Please help!