--- /usr/local/pkg/pfblockerng/pfblockerng.inc
+++ /usr/local/pkg/pfblockerng/pfblockerng.inc
@@ -2023,10 +2023,10 @@
 		}
 
 		// Update config.xml, if changes required
-		if ($pfbupdate) {
+		if ($pfbupdate && $pfb['dnsbl'] == 'on') {
 			config_set_path('nat/rule', $new_nat);
-			config_set_path('virtualip/vip', $new_vip);
-			write_config('pfBlockerNG: saving DNSBL changes');
+    			config_set_path('virtualip/vip', $new_vip);
+    			write_config('pfBlockerNG: saving DNSBL changes');
 		}
 
 		if ($mode == 'enabled' && $pfbupdate) {