X-Git-Url: http://wagnertech.de/gitweb/gitweb.cgi/mfinanz.git/blobdiff_plain/5b192e717db8efbf4b76162797b08cb65fc4922f..adb2f4cd6b1da8c8bc7f53be89ced2fa649b512f:/SL/DB/Customer.pm

diff --git a/SL/DB/Customer.pm b/SL/DB/Customer.pm
index 36bddc0c7..a19520ed7 100644
--- a/SL/DB/Customer.pm
+++ b/SL/DB/Customer.pm
@@ -35,7 +35,7 @@ __PACKAGE__->before_save('_before_save_set_customernumber');
 sub _before_save_set_customernumber {
   my ($self) = @_;
 
-  $self->create_trans_number if $self->customernumber eq '';
+  $self->create_trans_number if !defined $self->customernumber || $self->customernumber eq '';
   return 1;
 }