diff --git a/htdocs/admin/stock.php b/htdocs/admin/stock.php
index a784792ae02..34a511aeb77 100644
--- a/htdocs/admin/stock.php
+++ b/htdocs/admin/stock.php
@@ -40,6 +40,7 @@ if (!$user->admin) {
 
 $action = GETPOST('action', 'aZ09');
 $value = GETPOST('value', 'alpha');
+$modulepart = GETPOST('modulepart', 'aZ09');	// Used by actions_setmoduleoptions.inc.php
 $label = GETPOST('label', 'alpha');
 $scandir = GETPOST('scan_dir', 'alpha');
 $type = 'stock';
@@ -48,6 +49,7 @@ $type = 'stock';
 /*
  * Action
  */
+include DOL_DOCUMENT_ROOT.'/core/actions_setmoduleoptions.inc.php';
 
 $reg = array();