diff --git a/src/opnsense/mvc/app/models/OPNsense/Base/FieldTypes/ArrayField.php b/src/opnsense/mvc/app/models/OPNsense/Base/FieldTypes/ArrayField.php
index cb16212be..8482b4f46 100644
--- a/src/opnsense/mvc/app/models/OPNsense/Base/FieldTypes/ArrayField.php
+++ b/src/opnsense/mvc/app/models/OPNsense/Base/FieldTypes/ArrayField.php
@@ -37,7 +37,7 @@ class ArrayField extends BaseField
     /**
      * @var null|BaseField node to use for copying
      */
-    protected $internalTemplateNode = null;
+    private $internalTemplateNode = null;
 
     /**
      * Copy first node pointer as template node to make sure we always have a template to create new nodes from.