diff --git a/htdocs/adherents/subscription/list.php b/htdocs/adherents/subscription/list.php
index d3d84cb3624..70b63e9d938 100644
--- a/htdocs/adherents/subscription/list.php
+++ b/htdocs/adherents/subscription/list.php
@@ -115,7 +115,7 @@ if (!GETPOST('confirmmassaction', 'alpha') && $massaction != 'presend' && $massa
 	$massaction = '';
 }
 
-$parameters = array('socid'=>$socid);
+$parameters = array('socid'=>isset($socid) ? $socid : null);
 $reshook = $hookmanager->executeHooks('doActions', $parameters, $object, $action); // Note that $action and $object may have been modified by some hooks
 if ($reshook < 0) {
 	setEventMessages($hookmanager->error, $hookmanager->errors, 'errors');