How to remove the 2-character limitation of the first/last name field?

Hello, my website is D7.0.9, is there anyone who knows how to remove the 2-character limitation of the first/last name fields when editing the profile? Generally we have only one character (a Chinese word) in our last names.

Thanks a lot!

You can do this in admin panel -> builder -> profile fields -> edit profile tab

edit the field and in advanced setting change "Minimum value" to 1.

Good luck

Works like a charm!! Thanks for the answer. 

You're welcome