diff --git a/htdocs/commande/fiche.php b/htdocs/commande/fiche.php
index fc5c77c7f3b..64834e08db1 100644
--- a/htdocs/commande/fiche.php
+++ b/htdocs/commande/fiche.php
@@ -686,7 +686,7 @@ else
 			$sql.= ' p.label as product, p.ref, p.fk_product_type, p.rowid as prodid';
 			
 			//if ($conf->global->COM_ADD_PROD_DESC)
-			if ($conf->global->COM_ADD_PROD_DESC && ($conf->global->CHANGE_PROD_DESC=0))
+			if ($conf->global->COM_ADD_PROD_DESC && !$conf->global->CHANGE_PROD_DESC)
                         {
                         	$sql.= ', p.description as product_desc';
                         }
@@ -734,7 +734,7 @@ else
 							print ($objp->description && $objp->description!=$objp->product)?'<br>'.stripslashes(nl2br($objp->description)):'';
 							
 							//if ($conf->global->COM_ADD_PROD_DESC)
-							if ($conf->global->COM_ADD_PROD_DESC && ($conf->global->CHANGE_PROD_DESC=0))
+							if ($conf->global->COM_ADD_PROD_DESC && !$conf->global->CHANGE_PROD_DESC=0)
                         {
                         	print '<br>'.nl2br(stripslashes($objp->product_desc));
                         }
diff --git a/htdocs/compta/facture.php b/htdocs/compta/facture.php
index 29b43ff49c0..8af6fdacc9e 100644
--- a/htdocs/compta/facture.php
+++ b/htdocs/compta/facture.php
@@ -1371,7 +1371,7 @@ else
 			$sql .= ' '.$db->pdate('l.date_end').' as date_end, ';
 			$sql .= ' p.ref, p.fk_product_type, p.label as product';
 			
-			if ($conf->global->FAC_ADD_PROD_DESC && $conf->global->CHANGE_PROD_DESC=0)
+			if ($conf->global->FAC_ADD_PROD_DESC && !$conf->global->CHANGE_PROD_DESC)
                         {
                         	$sql.= ', p.description as product_desc';
                         }
@@ -1420,7 +1420,7 @@ else
 							print_date_range($objp->date_start,$objp->date_end);
 							print ($objp->description && $objp->description!=$objp->product)?'<br>'.$objp->description:'';
 							
-							if ($conf->global->FAC_ADD_PROD_DESC && $conf->global->CHANGE_PROD_DESC=0)
+							if ($conf->global->FAC_ADD_PROD_DESC && !$conf->global->CHANGE_PROD_DESC)
                             {
                             	print '<br>'.nl2br(stripslashes($objp->product_desc));
                             }