diff --git a/htdocs/supplier_proposal/card.php b/htdocs/supplier_proposal/card.php
index 9e92a5fb4b6..3f7b1eeb71c 100644
--- a/htdocs/supplier_proposal/card.php
+++ b/htdocs/supplier_proposal/card.php
@@ -1282,7 +1282,7 @@ if ($action == 'create') {
 	// Shipping Method
 	if (!empty($conf->expedition->enabled)) {
 		print '<tr><td>'.$langs->trans('SendingMethod').'</td><td colspan="2">';
-		print $form->selectShippingMethod(GETPOST('shipping_method_id') > 0 ? GETPOST('shipping_method_id', 'int') : $shipping_method_id, 'shipping_method_id', '', 1);
+		print $form->selectShippingMethod(GETPOST('shipping_method_id') > 0 ? GETPOST('shipping_method_id', 'int') : "", 'shipping_method_id', '', 1);
 		print '</td></tr>';
 	}
 
@@ -1290,7 +1290,7 @@ if ($action == 'create') {
 	print '<tr><td>'.$langs->trans("DeliveryDate").'</td>';
 	print '<td colspan="2">';
 	$datedelivery = dol_mktime(0, 0, 0, GETPOST('liv_month'), GETPOST('liv_day'), GETPOST('liv_year'));
-	if ($conf->global->DATE_LIVRAISON_WEEK_DELAY != "") {
+	if (!empty($conf->global->DATE_LIVRAISON_WEEK_DELAY)) {
 		$tmpdte = time() + ((7 * $conf->global->DATE_LIVRAISON_WEEK_DELAY) * 24 * 60 * 60);
 		$syear = date("Y", $tmpdte);
 		$smonth = date("m", $tmpdte);
@@ -1307,7 +1307,7 @@ if ($action == 'create') {
 	print '<td>'.$langs->trans("DefaultModel").'</td>';
 	print '<td colspan="2">';
 	$list = ModelePDFSupplierProposal::liste_modeles($db);
-	$preselected = ($conf->global->SUPPLIER_PROPOSAL_ADDON_PDF_ODT_DEFAULT ? $conf->global->SUPPLIER_PROPOSAL_ADDON_PDF_ODT_DEFAULT : $conf->global->SUPPLIER_PROPOSAL_ADDON_PDF);
+	$preselected = (!empty($conf->global->SUPPLIER_PROPOSAL_ADDON_PDF_ODT_DEFAULT) ? $conf->global->SUPPLIER_PROPOSAL_ADDON_PDF_ODT_DEFAULT : $conf->global->SUPPLIER_PROPOSAL_ADDON_PDF);
 	print $form->selectarray('model', $list, $preselected, 0, 0, 0, '', 0, 0, 0, '', '', 1);
 	print "</td></tr>";