How do I delete a rate I made by mistake

I got confused with a movie title, Driver, and I rate something I have not watched, Drive. I change the status to Plan to Watch but the rate is not deleted.

 ASTER:

1. To remove the rating:
In the "Rating" dropdown menu, select "--".

2. To remove a drama from the list:
Just click "Delete".

The dropdown menu, of course. So easy!
Thanks a lot, I was pressing stars and stars.