diff --git a/dns/dyndns/src/etc/inc/plugins.inc.d/dyndns/phpDynDNS.inc b/dns/dyndns/src/etc/inc/plugins.inc.d/dyndns/phpDynDNS.inc
index c21cab989..df3cb8ce1 100644
--- a/dns/dyndns/src/etc/inc/plugins.inc.d/dyndns/phpDynDNS.inc
+++ b/dns/dyndns/src/etc/inc/plugins.inc.d/dyndns/phpDynDNS.inc
@@ -883,7 +883,12 @@ class updatedns
             case 'gratisdns':
                 $server = "https://admin.gratisdns.com/ddns.php";
                 curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, true);
-                list($hostname, $domain) = explode(".", $this->_dnsHost, 2);
+                if(substr_count($this->_dnsHost, ".") < 2) {
+                   $domain = $this->_dnsHost;
+                   $hostname = $this->_dnsHost;
+                } else {
+                   list($hostname, $domain) = explode(".", $this->_dnsHost, 2);
+                }
                 curl_setopt($ch, CURLOPT_URL, $server . '?u=' . urlencode($this->_dnsUser) . '&p=' . $this->_dnsPass . '&h=' . $this->_dnsHost . '&d=' . $domain . '&i=' . $this->_dnsIP);
                 break;
             case 'ovh-dynhost':