@ -669,7 +669,7 @@ class rcube_imap
// fetch reuested headers from server
$a_msg_headers = array();
$this->_fetch_headers($mailbox, join(',', $msgs), $a_msg_headers, NULL);
$this->_fetch_headers($mailbox, $msgs, $a_msg_headers, NULL);
// return empty array if no messages found
if (!is_array($a_msg_headers) || empty($a_msg_headers))