diff --git a/htdocs/comm/mailing/card.php b/htdocs/comm/mailing/card.php
index 7c1d0542334..afbff9a770b 100644
--- a/htdocs/comm/mailing/card.php
+++ b/htdocs/comm/mailing/card.php
@@ -245,7 +245,7 @@ if (empty($reshook)) {
 							}
 						}
 						if (!empty($conf->global->MEMBER_ENABLE_PUBLIC)) {
-							$substitutionarray['__PUBLICLINK_NEWMEMBERFORM___'] = '<a target="_blank" href="'.DOL_MAIN_URL_ROOT.'/public/members/new.php">'.$langs->trans('BlankSubscriptionForm').'</a>';
+							$substitutionarray['__PUBLICLINK_NEWMEMBERFORM__'] = '<a target="_blank" href="'.DOL_MAIN_URL_ROOT.'/public/members/new.php">'.$langs->trans('BlankSubscriptionForm').'</a>';
 						}
 						/* For backward compatibility, deprecated */
 						if (!empty($conf->paypal->enabled) && !empty($conf->global->PAYPAL_SECURITY_TOKEN)) {