diff --git a/includes/discovery/os/nos.inc.php b/includes/discovery/os/nos.inc.php
index 765f1a22bd..3416354b89 100644
--- a/includes/discovery/os/nos.inc.php
+++ b/includes/discovery/os/nos.inc.php
@@ -1,7 +1,7 @@
 <?php
 
 if (!$os) {
-    if (strstr($sysDescr, "Brocade VDX") || strstr($sysObjectId, '.1.3.6.1.4.1.1588.2.2.1.1.1.5') || stristr($sysDescr, 'Brocade Communications Systems')) { 
+    if (strstr($sysDescr, "Brocade VDX")) {
         $os = "nos"; 
     }
 }