If a customer tries to update their information in the My Account section and doesn't change their email I get this error

Our system already has a record of that email address - please try logging in with that email address. If you do not use that address any longer you can correct it in the My Account area.

How can this be fixed, I've looked for options in the admin but nothing there. Looks like its a error in the code in that they want to keep the same email and just update otherstuff but the system won't let them.