}
my $terms = ($params{terms} // 'net') eq 'discount' ? 'terms_skonto' : 'terms_netto';
- my $date = $reference_date->add(days => $self->$terms);
+ my $date = $reference_date->clone->add(days => $self->$terms);
my $dow = $date->day_of_week;
$date = $date->add(days => 8 - $dow) if $dow > 5;