diff --git a/htdocs/product/class/product.class.php b/htdocs/product/class/product.class.php
index 367d5bcd6d6..e2ead61827d 100644
--- a/htdocs/product/class/product.class.php
+++ b/htdocs/product/class/product.class.php
@@ -38,7 +38,7 @@ class Product extends CommonObject
 	public $element='product';
 	public $table_element='product';
 	public $fk_element='fk_product';
-	protected $childtables=array('propaldet','commandedet','facturedet','contratdet');    // To test if we can delete object
+	protected $childtables=array('propaldet','commandedet','facturedet','contratdet','facture_fourn_det','commande_fournisseurdet');    // To test if we can delete object
 	protected $isnolinkedbythird = 1;     // No field fk_soc
 	protected $ismultientitymanaged = 1;	// 0=No test on entity, 1=Test with field entity, 2=Test with link by societe