Heirmdinger [I think thats how it's spelt] turret bug

So this happened to me the other day I just procrastinated on reporting it. When playing in Classic mode v.s ai intermediate difficulty, one of my turrets glitched out. It was shooting outside of it's maximum range non stop at the computer's champion, but did 0 damage. However, the turret wouldn't fix itself, it continued to hit 0 damage even when he was within range [or when minions were hitting it]. Once it got destroyed, everything went back to normal.