diff --git a/system/src/Grav/Framework/Acl/RecursiveActionIterator.php b/system/src/Grav/Framework/Acl/RecursiveActionIterator.php
index cbde18062..acf72e7ef 100644
--- a/system/src/Grav/Framework/Acl/RecursiveActionIterator.php
+++ b/system/src/Grav/Framework/Acl/RecursiveActionIterator.php
@@ -23,6 +23,8 @@ class RecursiveActionIterator implements RecursiveIterator, \Countable
 {
     use Constructor, Iterator, Countable;
 
+    public $items;
+
     /**
      * @see \Iterator::key()
      * @return string