diff --git a/libraries/classes/Navigation/NavigationTree.php b/libraries/classes/Navigation/NavigationTree.php
index 5301899ef8..979354b929 100644
--- a/libraries/classes/Navigation/NavigationTree.php
+++ b/libraries/classes/Navigation/NavigationTree.php
@@ -147,10 +147,10 @@ class NavigationTree
         if (isset($_REQUEST['aPath'])) {
             $this->aPath[0] = $this->parsePath($_REQUEST['aPath']);
             $this->pos2Name[0] = $_REQUEST['pos2_name'] ?? '';
-            $this->pos2Value[0] = (int) $_REQUEST['pos2_value'] ?? 0;
+            $this->pos2Value[0] = (int) ($_REQUEST['pos2_value'] ?? 0);
             if (isset($_REQUEST['pos3_name'])) {
                 $this->pos3Name[0] = $_REQUEST['pos3_name'] ?? '';
-                $this->pos3Value[0] = (int) $_REQUEST['pos3_value'] ?? 0;
+                $this->pos3Value[0] = (int) ($_REQUEST['pos3_value'] ?? 0);
             }
         } else {
             if (isset($_POST['n0_aPath'])) {