diff --git a/plugins/subscriptions_option/subscriptions_option.php b/plugins/subscriptions_option/subscriptions_option.php
index ba7236c67..af0481ce6 100644
--- a/plugins/subscriptions_option/subscriptions_option.php
+++ b/plugins/subscriptions_option/subscriptions_option.php
@@ -69,7 +69,7 @@ class subscriptions_option extends rcube_plugin
     function list_mailboxes($args){
         $rcmail = rcmail::get_instance();
         if (!$rcmail->config->get('use_subscriptions', true)) {
-            $args['folders'] = iil_C_ListMailboxes($rcmail->imap->conn, $rcmail->imap->_mod_mailbox($args['root']), $args['filter']);
+            $args['folders'] = iil_C_ListMailboxes($rcmail->imap->conn, $rcmail->imap->mod_mailbox($args['root']), $args['filter']);
         }
         return $args;
     }