Dynamics user with no first name

I have a user who doesn't have a first name.

I know Dynamics puts a # when either the first name or last name is missing.

The user name displays as "# name" which is a little irksome to the user.

Are there any work arounds so the users name simply display as "name" ?

I thought about putting a dot, dash or space in the first name field as that may me a little less visible.

daniel