X-Git-Url: http://wagnertech.de/git?a=blobdiff_plain;f=SL%2FDB%2FUnit.pm;h=508aa747718cd2fe9a0520df18df204c347e023b;hb=db791046bcff820895321c617d66843f4c28aeae;hp=f5f1bc14c7ce0c67c23d147d6a3ad649ed78eaad;hpb=fec397bf76c75df4102a45444512572a686cbf24;p=kivitendo-erp.git

diff --git a/SL/DB/Unit.pm b/SL/DB/Unit.pm
index f5f1bc14c..508aa7477 100644
--- a/SL/DB/Unit.pm
+++ b/SL/DB/Unit.pm
@@ -57,7 +57,7 @@ sub convert_to {
   my $my_base_factor    = $self->base_factor       || 1;
   my $other_base_factor = $other_unit->base_factor || 1;
 
-  return $qty * $my_base_factor / $other_base_factor;
+  return ($qty // 0) * $my_base_factor / $other_base_factor;
 }
 
 sub is_time_based {