diff --git a/includes/discovery/discovery-protocols.inc.php b/includes/discovery/discovery-protocols.inc.php
index 93a130878..a27b48286 100644
--- a/includes/discovery/discovery-protocols.inc.php
+++ b/includes/discovery/discovery-protocols.inc.php
@@ -143,12 +143,24 @@ if ($device['os'] == 'pbn' && $config['autodiscovery']['xdp'] === true) {
                     if (!$remote_device_id && is_valid_hostname($lldp['lldpRemSysName'])) {
                         $remote_device_id = discover_new_device($lldp['lldpRemSysName'], $device, 'LLDP', $interface);
                     }
-
+                    // normalize MAC address if present
+                    if ($lldp['lldpRemChassisIdSubtype'] == 'macAddress') {
+                        $remote_mac_address = str_replace(array(' ', ':', '-'), '', strtolower($lldp['lldpRemChassisId']));
+                    }
+                    // get remote device hostname from db by MAC address and replace lldpRemSysName if absent
+                    if (!$remote_device_id && $remote_mac_address) {
+                        $remote_device_id = dbFetchCell('SELECT `device_id` FROM `ports` WHERE ifPhysAddress = ? AND `deleted` = ?', array($remote_mac_address, '0'));
+                        if ($remote_device_id) {
+                            $remote_device_hostname = dbFetchRow('SELECT hostname FROM devices WHERE device_id = ?', $remote_device_id);
+                        }    
+                        if ($remote_device_hostname['hostname']) {
+                            $lldp['lldpRemSysName'] = $remote_device_hostname['hostname'];
+                        }
+                    }
                     if ($remote_device_id) {
                         $if             = $lldp['lldpRemPortDesc'];
                         $id             = $lldp['lldpRemPortId'];
-                        $PhysAddress    = preg_replace('/ /', '', $id);
-                        $remote_port_id = dbFetchCell('SELECT `port_id` FROM `ports` WHERE (`ifDescr` = ? OR `ifName` = ? OR `ifDescr` = ? OR `ifName` = ? OR `ifPhysAddress` = ?) AND `device_id` = ?', array($if, $if, $id, $id, $PhysAddress, $remote_device_id));
+                        $remote_port_id = dbFetchCell('SELECT `port_id` FROM `ports` WHERE (`ifDescr` = ? OR `ifName` = ? OR `ifDescr` = ? OR `ifName` = ? OR `ifPhysAddress` = ?) AND `device_id` = ?', array($if, $if, $id, $id, $remote_mac_address, $remote_device_id));
                     }
                     else {
                         $remote_port_id = '0';
@@ -163,7 +175,7 @@ if ($device['os'] == 'pbn' && $config['autodiscovery']['xdp'] === true) {
     }//end if
 }//end elseif
 
-echo 'OSPF Discovery: ';
+echo ' OSPF Discovery: ';
 
 if ($config['autodiscovery']['ospf'] === true) {
     echo "enabled\n";