Section 179 deduction was later put on a MACRS depreciation schedule, what should I do?

Hello and thanks in advance for any help-

 

On my 2016 taxes the full value of a laptop was deducted using section 179.

For my 2018 taxes I changed tax services and the new preparer added the already depreciated laptop to a MACRS schedule and I received a depreciation deduction for it. This schedule also carried over to 2019 where I also received a deduction.

I found the error this weekend when I decided to tackle 2020 on my own with Turbotax.

 

I'm not sure where to go from here- Can I just enter the full value as being previously claimed under sec179 in turbotax and be done with it, or do I need to do something else? Also, will I need to go back and amend 2018/19 if they've already been accepted by the irs?

 

Thanks!