diff --git a/includes/discovery/vlans.inc.php b/includes/discovery/vlans.inc.php
index c9f8a3fc6a..c6b7e3526a 100644
--- a/includes/discovery/vlans.inc.php
+++ b/includes/discovery/vlans.inc.php
@@ -29,7 +29,7 @@ if ($device['os'] === 'junos') {
     require 'includes/discovery/vlans/avaya-ers.inc.php';
 }
 
-if (is_array($device['vlans']) == false) {
+if (empty($device['vlans']) === true) {
     require 'includes/discovery/vlans/q-bridge-mib.inc.php';
     require 'includes/discovery/vlans/cisco-vtp.inc.php';
 }