diff --git a/htdocs/commande/card.php b/htdocs/commande/card.php
index bc4d085f8ce..5ad1c7dda24 100644
--- a/htdocs/commande/card.php
+++ b/htdocs/commande/card.php
@@ -424,7 +424,7 @@ if (empty($reshook)) {
 								}
 
 								// Defined the new fk_parent_line
-								if ($result > 0) {
+								if ($result > 0 && $lines[$i]->product_type == 9) {
 									$fk_parent_line = $result;
 								}
 							}
diff --git a/htdocs/compta/facture/card.php b/htdocs/compta/facture/card.php
index dd322bd8245..c1ce6c3f7ba 100644
--- a/htdocs/compta/facture/card.php
+++ b/htdocs/compta/facture/card.php
@@ -1244,7 +1244,7 @@ if (empty($reshook)) {
 							$object->lines[] = $line; // insert new line in current object
 
 							// Defined the new fk_parent_line
-							if ($result > 0) {
+							if ($result > 0 && $line->product_type == 9) {
 								$fk_parent_line = $result;
 							}
 						}
@@ -1765,7 +1765,7 @@ if (empty($reshook)) {
 										}
 
 										// Defined the new fk_parent_line
-										if ($result > 0) {
+										if ($result > 0 && $lines[$i]->product_type == 9) {
 											$fk_parent_line = $result;
 										}
 									}