Mistake on Common App

Of course right after submitting his first application we realized there was a small error on the Common App. When he was listing his honors he accidentally put down that he made Honor Roll in 9, 10, 11 AND 12. He’s a high school senior so putting down 12 was inaccurate since first quarter isn’t over yet. Is this something to worry about? Should he contact the school and mention it? He doesn’t want to appear dishonest yet we are wondering if it’s worth bringing to their attention. Thank you.