Mistake Monday

MISTAKE MONDAY for July 27: Can YOU spot what’s wrong?

Can you spot what’s wrong in the image below? Please post your answer as a comment. Don’t feel bad if you don’t identify it immediately. I had to check my notes to catch this one, even though I’d spotted right away when I made this screenshot months ago.

 

MM it's its BillW
I post these challenges to raise awareness of the importance of proofreading.