Entered Wrong Amount for Box 18 & 19

My employer mailed 2 pages for my W2 and I did not notice the difference between them until after submitting my return. Page 1 had two sections with different amounts in boxes 18 & 19. Page 2 had the total of those amounts on page 1 with "Total City" listed in box 20. For both federal and state (Ohio), I manually entered the numbers for my W2 and therefore entered the incorrect amount for Boxes 18 & 19. I only entered a portion of what was on page 1 which was less than the totals listed on page 2 with "Total City". I don't believe this has any real impact on my return as the 1040 forms do not ask for local wages. Do I need to amend my federal or state return?