Misunderstanding error message with Account activation by Admin

Account Activation is set to By Admin.
A new user registered.
If the user trys to login before the account has been following approved by an administrator he is getting following message:
"The specified username is currently inactive. If you have problems activating your account, please contact a board administrator."
This message is not right. A better message would be:
"The specified username is currently inactive as your account is yet to be approved by a board administrator."
Effected files:
includes/auth/auth_apache.php
includes/auth/auth_db.php
includes/auth/auth_ldap.php
The error messgae comes from line with
'error_msg' => 'ACTIVE_ERROR',