diff --git a/includes/osdiscovery/fortigate.inc.php b/includes/osdiscovery/fortigate.inc.php
index d90e5cb63..99ceb8011 100755
--- a/includes/osdiscovery/fortigate.inc.php
+++ b/includes/osdiscovery/fortigate.inc.php
@@ -1,7 +1,7 @@
 <?php
 
 if(!$os) {
-  $fnSysVersion = shell_exec($config['snmpget'] . " -Ovq -".$device['snmpver']." -c ". $device['community'] ." ". $device['hostname'].":".$device['port'] ." 1.3.6.1.4.1.12356.1.3.0");
+  $fnSysVersion = snmp_get($device, "1.3.6.1.4.1.12356.1.3.0", "-Ovq");
   if(strstr($fnSysVersion, "Fortigate")) {
     $os = "fortigate"; 
   }