diff --git a/htdocs/delivery/class/delivery.class.php b/htdocs/delivery/class/delivery.class.php
index 4d498d70357..c5b62d4233d 100644
--- a/htdocs/delivery/class/delivery.class.php
+++ b/htdocs/delivery/class/delivery.class.php
@@ -825,6 +825,7 @@ class Delivery extends CommonObject
 				$line->volume_units   	= $obj->volume_units;
 
 				$line->fk_unit = $obj->fk_unit;
+				$line->fetch_optionals();
 
 				$this->lines[$i] = $line;