X-Git-Url: http://wagnertech.de/gitweb/gitweb.cgi/kivitendo-erp.git/blobdiff_plain/a23454bb1b039a31b7f77710ff663fa9152d530c..2b8804456d1d3ee249a70d98679ea3a934b25a39:/SL/PrefixedNumber.pm

diff --git a/SL/PrefixedNumber.pm b/SL/PrefixedNumber.pm
index 849421f97..b3f609892 100644
--- a/SL/PrefixedNumber.pm
+++ b/SL/PrefixedNumber.pm
@@ -64,7 +64,7 @@ sub set_to {
 sub set_to_max {
   my ($self, @numbers) = @_;
 
-  return $self->set_to(max map { SL::PrefixedNumber->new(number => $_)->_state->{ref_number} } @numbers);
+  return $self->set_to(max map { SL::PrefixedNumber->new(number => $_ // 0)->_state->{ref_number} } @numbers);
 }
 
 1;