diff --git a/htdocs/comm/propal.php b/htdocs/comm/propal.php
index 0e77f8512d3..b3aafa06ba2 100644
--- a/htdocs/comm/propal.php
+++ b/htdocs/comm/propal.php
@@ -112,7 +112,7 @@ if ($_POST['action'] == 'setdate_livraison')
 {
 	$propal = new Propal($db);
     $propal->fetch($_GET['propalid']);
-	$result=$propal->set_date_livraison($user,$_POST['liv_year']."-".$_POST['liv_month']."-".$_POST['liv_day']);
+	$result=$propal->set_date_livraison($user,mktime(0, 0, 0, $_POST['liv_month'], $_POST['liv_day'], $_POST['liv_year']);
 	if ($result < 0) dolibarr_print_error($db,$propal->error);
 }
 
diff --git a/htdocs/commande/fiche.php b/htdocs/commande/fiche.php
index 8e7f1e46dea..9f50ece92d0 100644
--- a/htdocs/commande/fiche.php
+++ b/htdocs/commande/fiche.php
@@ -145,7 +145,7 @@ if ($_POST['action'] == 'setdate_livraison' && $user->rights->commande->creer)
 {
 	$commande = new Commande($db);
 	$commande->fetch($_GET['id']);
-	$commande->set_date_livraison($user,$_POST['liv_year']."-".$_POST['liv_month']."-".$_POST['liv_day']);
+	$commande->set_date_livraison($user,mktime(0, 0, 0, $_POST['liv_month'], $_POST['liv_day'], $_POST['liv_year']);
 }
 
 if ($_POST['action'] == 'setdeliveryadress' && $user->rights->commande->creer)