I put down that I already took an AP exam that I plan on taking this May?

I already submitted my apps and I just noticed I made an error. When it says to put down the AP exams that you have or plan on taking, I put down the AP exams that I plan on taking this May as taken on 5/2015 instead of 5/2016. I did leave the scores blank.
Should I email the admission office or they will probably figure it out as a mistake since it makes no sense to take an AP exam, then the following year take the actual AP class.

If you want to, you can email the admissions office just to make sure. It’s not a big deal though.