diff --git a/includes/static-config.php b/includes/static-config.php
index 6a5276dc99..12227170f1 100644
--- a/includes/static-config.php
+++ b/includes/static-config.php
@@ -713,12 +713,12 @@ $config['os'][$os]['icon']  		= "tripplite";
 
 foreach($config['os'] as $this_os => $blah)
 {
-  $this_os_group = $config['os'][$this_os]['group'];
-  if(isset($config['os'][$this_os]['group']) && isset($config['os_group'][$this_os_group]))
+  if (isset($config['os'][$this_os]['group'])) { $this_os_group = $config['os'][$this_os]['group']; }
+  if (isset($config['os'][$this_os]['group']) && isset($config['os_group'][$this_os_group]))
   {
     foreach ($config['os_group'][$this_os_group] as $property => $value)
     {
-      if(!isset($config['os'][$this_os][$property]))
+      if (!isset($config['os'][$this_os][$property]))
       {
         $config['os'][$this_os][$property] = $value;
       }