diff --git a/includes/discovery/vlans.inc.php b/includes/discovery/vlans.inc.php
index 360d6dadad..8fdeb0ebc4 100644
--- a/includes/discovery/vlans.inc.php
+++ b/includes/discovery/vlans.inc.php
@@ -25,6 +25,8 @@ $index_to_base = array_flip($base_to_index);
 
 if ($device['os'] === 'junos') {
     require 'includes/discovery/vlans/junos.inc.php';
+} else if ($device['os'] === 'avaya-ers') {
+    require 'includes/discovery/vlans/avaya-ers.inc.php';
 } else {
     require 'includes/discovery/vlans/q-bridge-mib.inc.php';
     require 'includes/discovery/vlans/cisco-vtp.inc.php';