diff --git a/includes/discovery/os/zywall.inc.php b/includes/discovery/os/zywall.inc.php
index 0b3b25056..0a6fc008e 100644
--- a/includes/discovery/os/zywall.inc.php
+++ b/includes/discovery/os/zywall.inc.php
@@ -4,4 +4,7 @@ if (!$os) {
     if (strstr($sysDescr, 'ZyWALL')) {
         $os = 'zywall';
     }
+    if (strstr($sysObjectId, '.1.3.6.1.4.1.890.1.15')) {
+        $os = 'zywall';
+    }
 }