diff --git a/htdocs/comm/action/card.php b/htdocs/comm/action/card.php
index aacf6a00251..fa6191a8208 100644
--- a/htdocs/comm/action/card.php
+++ b/htdocs/comm/action/card.php
@@ -813,7 +813,7 @@ if (empty($reshook) && GETPOST('actionmove', 'alpha') == 'mupdate') {
 
 	$newdate = GETPOST('newdate', 'alpha');
 	if (empty($newdate) || strpos($newdate, 'dayevent_') != 0) {
-		header("Location: ".$backtopage);
+		header("Location: ".$backtopage, true, 307);
 		exit;
 	}
 
@@ -898,7 +898,7 @@ if (empty($reshook) && GETPOST('actionmove', 'alpha') == 'mupdate') {
 		}
 	}
 	if (!empty($backtopage)) {
-		header("Location: ".$backtopage);
+		header("Location: ".$backtopage, true, 307);
 		exit;
 	} else {
 		$action = '';
diff --git a/htdocs/delivery/class/delivery.class.php b/htdocs/delivery/class/delivery.class.php
index 9edc080701b..5938cfff04c 100644
--- a/htdocs/delivery/class/delivery.class.php
+++ b/htdocs/delivery/class/delivery.class.php
@@ -1060,7 +1060,7 @@ class Delivery extends CommonObject
 	 *  @param     int			$hideref        Hide ref
 	 *  @return    int             				0 if KO, 1 if OK
 	 */
-	public function generateDocument($modele, $outputlangs = '', $hidedetails = 0, $hidedesc = 0, $hideref = 0)
+	public function generateDocument($modele, $outputlangs, $hidedetails = 0, $hidedesc = 0, $hideref = 0)
 	{
 		global $conf, $user, $langs;
 
diff --git a/htdocs/product/stock/class/entrepot.class.php b/htdocs/product/stock/class/entrepot.class.php
index b47430bffc2..8dea40c1b62 100644
--- a/htdocs/product/stock/class/entrepot.class.php
+++ b/htdocs/product/stock/class/entrepot.class.php
@@ -866,7 +866,7 @@ class Entrepot extends CommonObject
 	 *  @param     int			$hideref        Hide ref
 	 *  @return    int             				0 if KO, 1 if OK
 	 */
-	public function generateDocument($modele, $outputlangs = '', $hidedetails = 0, $hidedesc = 0, $hideref = 0)
+	public function generateDocument($modele, $outputlangs, $hidedetails = 0, $hidedesc = 0, $hideref = 0)
 	{
 		global $conf, $user, $langs;
 
diff --git a/htdocs/product/stock/class/mouvementstock.class.php b/htdocs/product/stock/class/mouvementstock.class.php
index b92f7467172..8637bcda5fa 100644
--- a/htdocs/product/stock/class/mouvementstock.class.php
+++ b/htdocs/product/stock/class/mouvementstock.class.php
@@ -1163,7 +1163,7 @@ class MouvementStock extends CommonObject
 	 *  @param     int			$hideref        Hide ref
 	 *  @return    int             				0 if KO, 1 if OK
 	 */
-	public function generateDocument($modele, $outputlangs = '', $hidedetails = 0, $hidedesc = 0, $hideref = 0)
+	public function generateDocument($modele, $outputlangs, $hidedetails = 0, $hidedesc = 0, $hideref = 0)
 	{
 		global $conf, $user, $langs;