diff --git a/htdocs/adherents/admin/website.php b/htdocs/adherents/admin/website.php
index e3acf3c4d99..56d6ec996e4 100644
--- a/htdocs/adherents/admin/website.php
+++ b/htdocs/adherents/admin/website.php
@@ -133,6 +133,7 @@ if ($conf->use_javascript_ajax) {
 
 print '<span class="opacitymedium">'.$langs->trans("BlankSubscriptionFormDesc").'</span><br><br>';
 
+$param = '';
 
 $enabledisablehtml = $langs->trans("EnablePublicSubscriptionForm").' ';
 if (empty($conf->global->MEMBER_ENABLE_PUBLIC)) {