diff --git a/includes/discovery/os/macosx.inc.php b/includes/discovery/os/macosx.inc.php
index 7ec168a585..486b6b1ed1 100644
--- a/includes/discovery/os/macosx.inc.php
+++ b/includes/discovery/os/macosx.inc.php
@@ -11,7 +11,7 @@
  */
 if (!$os) {
     if (strpos($sysObjectId, '1.3.6.1.4.1.8072.3.2.16') !== false ||
-        strpos($sysObjectId, '1.3.6.1.4.1.8072.3.2.255') !== false) {
+        preg_match('/Darwin Kernel Version 15/', $sysDescr)) {
         $os = 'macosx';
     }
 }