my $recur_method = $self->option('recur_method', 1) || 'anniversary';
if ( $recur_method eq 'prorate'
- or ($recur_method eq 'anniversary' and $self->option('sync_bill_date'))
+ or ($recur_method eq 'anniversary' and $self->option('sync_bill_date',1))
) {
$charges = $self->calc_prorate(@_);
}