MISTAKE MONDAY for April 15: Can YOU spot what’s wrong?

Can you spot what’s wrong in the image below? Please post your answer as a comment.

This mistake is subtle. It took me years to absorb that this is considered a mistake by most proofreaders.

MM highly-anticipated

 

 

 

 

 

 

 

 

I post these challenges to raise awareness of the importance of proofreading.