"2 Files Failed To Validate And Will Be Reacquired"

Hi, so I dont know since when I noticed this but recently I realized everytime after launching the game and playing it, if I go verify the game files after, it would say "2 files failed to validate and will be reacquired" before going back to normal. My games seem to work fine but idk if this will mess up some things in the future. Is this normal?