Accidently reported the wrong grades in my application.

I was reviewing my UC application last night and realized that, like an idiot, I’d accidently put in grades for the last half of my senior year when those slots should have been empty because it hadn’t freaking happened yet. Should I count on them realizing it’s a mistake or send them an email and let them know about it?

Notify them just in case (although most people would realize it’s a mistake, admissions people have lots of stuff on their hands and they might get pizzed)
I had a similar problem with putting a wrong course for the senior year, I’m still getting around to notifying them. (Half done whew, it’s so friggin hard)