diff --git a/app/devices/resources/classes/device.php b/app/devices/resources/classes/device.php
index 3629450c0b..de813176cc 100644
--- a/app/devices/resources/classes/device.php
+++ b/app/devices/resources/classes/device.php
@@ -311,6 +311,12 @@ include "root.php";
 						//build the delete array
 							foreach ($records as $x => $record) {
 								if ($record['checked'] == 'true' && is_uuid($record['uuid'])) {
+									$sql = "update v_devices set device_uuid_alternate = null where device_uuid_alternate = :device_uuid_alternate; ";
+									$parameters['device_uuid_alternate'] = $record['uuid'];
+									$database = new database;
+									$database->execute($sql, $parameters);
+									unset($sql, $parameters);
+
 									$array[$this->table][$x][$this->uuid_prefix.'uuid'] = $record['uuid'];
 									$array['device_settings'][$x]['device_uuid'] = $record['uuid'];
 									$array['device_lines'][$x]['device_uuid'] = $record['uuid'];