diff --git a/htdocs/mrp/mo_movements.php b/htdocs/mrp/mo_movements.php
index 59b4b07fe82..b4b777f7b49 100644
--- a/htdocs/mrp/mo_movements.php
+++ b/htdocs/mrp/mo_movements.php
@@ -12,7 +12,7 @@
  * GNU General Public License for more details.
  *
  * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ * along with this program. If not, see <https://www.gnu.org/licenses/>.
  */
 
 /**
@@ -252,7 +252,9 @@ $productlot = new ProductLot($db);
 $warehousestatic = new Entrepot($db);
 $userstatic = new User($db);
 
-llxHeader('', $langs->trans('Mo'), '');
+$help_url = 'EN:Module_Manufacturing_Orders|FR:Module_Ordres_de_Fabrication';
+
+llxHeader('', $langs->trans('Mo'), $help_url);
 
 // Part to show record
 if ($object->id > 0 && (empty($action) || ($action != 'edit' && $action != 'create'))) {