PHP 5.3 and date error

I installed this module on a new build of 6.14 on PHP 5.3 and received this error:

"warning: date(): It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected 'America/Denver' for '-7.0/no DST' instead in C:\inetpub\drupal-6.14\sites\all\modules\backup_migrate\backup_migrate.module on line 479."

I fixed this by adding the following line @ 478:
date_default_timezone_set(variable_get("date_default_timezone_name", 'America/Phoenix'));

This seems to be a PHP 5.3 date() function issue. Please test this fix on a non-production, as I have not done extensive testing to see if this break other things.