diff --git a/htdocs/admin/commande.php b/htdocs/admin/commande.php
index 79c42f6e2db..b366ea928ef 100644
--- a/htdocs/admin/commande.php
+++ b/htdocs/admin/commande.php
@@ -117,7 +117,7 @@ if ($action == 'updateMask') {
 } elseif ($action == 'del') {
 	$ret = delDocumentModel($value, $type);
 	if ($ret > 0) {
-		if ($conf->global->COMMANDE_ADDON_PDF == "$value") {
+		if (getDolGlobalString('COMMANDE_ADDON_PDF') == $value) {
 			dolibarr_del_const($db, 'COMMANDE_ADDON_PDF', $conf->entity);
 		}
 	}
@@ -461,7 +461,7 @@ foreach ($dirmodels as $reldir) {
 
 								// Default
 								print '<td class="center">';
-								if ($conf->global->COMMANDE_ADDON_PDF == $name) {
+								if (getDolGlobalString('COMMANDE_ADDON_PDF') == $name) {
 									print img_picto($langs->trans("Default"), 'on');
 								} else {
 									print '<a class="reposition" href="'.$_SERVER["PHP_SELF"].'?action=setdoc&token='.newToken().'&value='.urlencode($name).'&scan_dir='.urlencode($module->scandir).'&label='.urlencode($module->name).'" alt="'.$langs->trans("Default").'">'.img_picto($langs->trans("Disabled"), 'off').'</a>';