diff --git a/htdocs/contrat/agenda.php b/htdocs/contrat/agenda.php
index 94232aa6afd..c320b708ccb 100644
--- a/htdocs/contrat/agenda.php
+++ b/htdocs/contrat/agenda.php
@@ -244,6 +244,8 @@ if ($id > 0) {
 	$newcardbutton = '';
 	if (!empty($conf->agenda->enabled)) {
 		if (!empty($user->rights->agenda->myactions->create) || !empty($user->rights->agenda->allactions->create)) {
+			$backtopage = $_SERVER['PHP_SELF'].'?id='.$object->id;
+			$out = '&origin='.urlencode($object->element).'&originid='.$object->id.'&backtopage='.urlencode($backtopage);
 			$newcardbutton .= dolGetButtonTitle($langs->trans('AddAction'), '', 'fa fa-plus-circle', DOL_URL_ROOT.'/comm/action/card.php?action=create'.$out);
 		}
 	}