Forgot to list a senior year class on my UC app?

For Senior Year, I’m taking AP Government second semester, and Economics first semester. Essentially, this is the same class, just with different material each semester. I forgot to list this on the UC app, and listed that I am only taking AP Government all year. Is this something that can be explained if questions arise, or should I do something about it immediately?

I did this too, lol dw. Call admissions tmrw and notify them.