diff --git a/includes/discovery/os/multimatic.inc.php b/includes/discovery/os/multimatic.inc.php
index bda05bfb4..13af1913e 100644
--- a/includes/discovery/os/multimatic.inc.php
+++ b/includes/discovery/os/multimatic.inc.php
@@ -5,5 +5,8 @@ if (!$os) {
         if (strstr(snmp_get($device, 'UPS-MIB::upsIdentManufacturer.0', '-Oqv', ''), 'Multimatic')) {
             $os = 'multimatic';
         }
+        if (strstr(snmp_get($device, 'UPS-MIB::upsIdentManufacturer.0', '-Oqv', ''), 'S2S')) {
+            $os = 'multimatic';
+        }
     }
 }