Getting a wrong Advancement

If you throw eggs, snowballs or other projectiles on mobs, you will get the advancement ´+Take Aim+´. But usually you need to shoot with a bow to get this advancement. I hope you know what i mean.

Steps:
1. Get an Egg or something you can throw.
2. Throw it on a mob.
3. You will get the Advancement ´Take Aim´.