diff --git a/htdocs/commande/list.php b/htdocs/commande/list.php
index 54ba84705cb..003fdda6d09 100644
--- a/htdocs/commande/list.php
+++ b/htdocs/commande/list.php
@@ -592,7 +592,7 @@ if (empty($reshook)) {
 
 			if ($nb_bills_created == 1) {
 				$texttoshow = $langs->trans('BillXCreated', '{s1}');
-				$texttoshow = str_replace('{s1}', '<a href="'.DOL_URL_ROOT.'/compta/facture/card.php?id='.urlencode($lastid).'">'.$lastref.'</a>', $texttoshow);
+				$texttoshow = str_replace('{s1}', '<a href="'.DOL_URL_ROOT.'/compta/facture/card.php?id='.urlencode((string) ($lastid)).'">'.$lastref.'</a>', $texttoshow);
 				setEventMessages($texttoshow, null, 'mesgs');
 			} else {
 				setEventMessages($langs->trans('BillCreated', $nb_bills_created), null, 'mesgs');
@@ -616,10 +616,10 @@ if (empty($reshook)) {
 				$param .= '&search_all='.urlencode($search_all);
 			}
 			if ($show_files) {
-				$param .= '&show_files='.urlencode($show_files);
+				$param .= '&show_files='.urlencode((string) ($show_files));
 			}
 			if ($socid > 0) {
-				$param .= '&socid='.urlencode($socid);
+				$param .= '&socid='.urlencode((string) ($socid));
 			}
 			if ($search_status != '') {
 				$param .= '&search_status='.urlencode($search_status);
@@ -652,7 +652,7 @@ if (empty($reshook)) {
 				$param .= '&search_ref_customer='.urlencode($search_ref_customer);
 			}
 			if ($search_user > 0) {
-				$param .= '&search_user='.urlencode($search_user);
+				$param .= '&search_user='.urlencode((string) ($search_user));
 			}
 			if ($search_sale > 0) {
 				$param .= '&search_sale='.urlencode($search_sale);
@@ -1242,7 +1242,7 @@ if ($search_ref_customer) {
 	$param .= '&search_ref_customer='.urlencode($search_ref_customer);
 }
 if ($search_user > 0) {
-	$param .= '&search_user='.urlencode($search_user);
+	$param .= '&search_user='.urlencode((string) ($search_user));
 }
 if ($search_sale > 0) {
 	$param .= '&search_sale='.urlencode($search_sale);
@@ -1257,7 +1257,7 @@ if ($search_total_ttc != '') {
 	$param .= '&search_total_ttc='.urlencode($search_total_ttc);
 }
 if ($search_warehouse != '') {
-	$param .= '&search_warehouse='.urlencode($search_warehouse);
+	$param .= '&search_warehouse='.urlencode((string) ($search_warehouse));
 }
 if ($search_login) {
 	$param .= '&search_login='.urlencode($search_login);
@@ -1290,19 +1290,19 @@ if ($search_state != '') {
 	$param .= '&search_state='.urlencode($search_state);
 }
 if ($search_country != '') {
-	$param .= '&search_country='.urlencode($search_country);
+	$param .= '&search_country='.urlencode((string) ($search_country));
 }
 if ($search_type_thirdparty && $search_type_thirdparty != '-1') {
-	$param .= '&search_type_thirdparty='.urlencode($search_type_thirdparty);
+	$param .= '&search_type_thirdparty='.urlencode((string) ($search_type_thirdparty));
 }
 if ($search_product_category != '') {
-	$param .= '&search_product_category='.urlencode($search_product_category);
+	$param .= '&search_product_category='.urlencode((string) ($search_product_category));
 }
 if (($search_categ_cus > 0) || ($search_categ_cus == -2)) {
-	$param .= '&search_categ_cus='.urlencode($search_categ_cus);
+	$param .= '&search_categ_cus='.urlencode((string) ($search_categ_cus));
 }
 if ($show_files) {
-	$param .= '&show_files='.urlencode($show_files);
+	$param .= '&show_files='.urlencode((string) ($show_files));
 }
 if ($optioncss != '') {
 	$param .= '&optioncss='.urlencode($optioncss);
@@ -1311,16 +1311,16 @@ if ($search_billed != '') {
 	$param .= '&search_billed='.urlencode($search_billed);
 }
 if ($search_fk_cond_reglement > 0) {
-	$param .= '&search_fk_cond_reglement='.urlencode($search_fk_cond_reglement);
+	$param .= '&search_fk_cond_reglement='.urlencode((string) ($search_fk_cond_reglement));
 }
 if ($search_fk_shipping_method > 0) {
-	$param .= '&search_fk_shipping_method='.urlencode($search_fk_shipping_method);
+	$param .= '&search_fk_shipping_method='.urlencode((string) ($search_fk_shipping_method));
 }
 if ($search_fk_mode_reglement > 0) {
-	$param .= '&search_fk_mode_reglement='.urlencode($search_fk_mode_reglement);
+	$param .= '&search_fk_mode_reglement='.urlencode((string) ($search_fk_mode_reglement));
 }
 if ($search_fk_input_reason > 0) {
-	$param .= '&search_fk_input_reason='.urlencode($search_fk_input_reason);
+	$param .= '&search_fk_input_reason='.urlencode((string) ($search_fk_input_reason));
 }
 
 // Add $param from extra fields