diff --git a/usr/local/www/firewall_nat_out.php b/usr/local/www/firewall_nat_out.php
index 5838210d5a..62aee106a3 100755
--- a/usr/local/www/firewall_nat_out.php
+++ b/usr/local/www/firewall_nat_out.php
@@ -46,6 +46,9 @@ require_once("functions.inc");
 require_once("filter.inc");
 require_once("shaper.inc");
 
+if (!is_array($config['nat']['advancedoutbound']))
+	$config['nat']['advancedoutbound'] = array();
+
 if (!is_array($config['nat']['advancedoutbound']['rule']))
 	$config['nat']['advancedoutbound']['rule'] = array();
 
diff --git a/usr/local/www/firewall_nat_out_edit.php b/usr/local/www/firewall_nat_out_edit.php
index 60c1e3af10..0cbd44a1bb 100755
--- a/usr/local/www/firewall_nat_out_edit.php
+++ b/usr/local/www/firewall_nat_out_edit.php
@@ -45,6 +45,9 @@ require("guiconfig.inc");
 require("filter.inc");
 require("shaper.inc");
 
+if (!is_array($config['nat']['advancedoutbound']))
+        $config['nat']['advancedoutbound'] = array();
+
 if (!is_array($config['nat']['advancedoutbound']['rule'])) {
 	$config['nat']['advancedoutbound']['rule'] = array();
 }