Minor Auto-Copyright Update Prob

[gamename]

Hi

I have this in my .emacs file to auto-update copyright info

(add-hook 'after-save-hook 'copyright-update)

 it works great except that the string "Update copyright?" stays in the
mini buffer after the save completes.  How do I get the minibuffer to
clear auto-magically and go back to the normal "wrote <filename>"
string?

TIA,
-T