Vehicle depreciation

Last year when May tax accountants did depreciation for a cargo van that a purchased on 2023, she added the cost amount wrong $45,846, while checking the dealer paperwork I noticed the total cash price was 59950 , depreciation deduction for 2023 was 6,549  with the 7 years depreciation scheduled. It  should have been 8,564 with the right price. 
I need advice-for this year should I put the correct price amount ? and if there is any way to correct 2023 cost amount.