depreciation section 179

in doing 2020 tax i have discovered a possible error...i have a rental condo. not a business other than renting the condo. not know what i did i see in 2018 i have $615 in section 179 for window treatment. the condo has been a rental since 2015 and i did something in 2018. it also says 100% business. Is this correct?  do i need to correct or does it matter?

 

after looking at what is property assests it lists computers cars etc. do i correct? if so how?

what does do? i hope to sell it this year when the current tenant finds a new place. 

 

thank you for your time andhelp