diff --git a/src/Form/Control/TreeItemSelector.php b/src/Form/Control/TreeItemSelector.php
index 93f6285e1d..b360997246 100644
--- a/src/Form/Control/TreeItemSelector.php
+++ b/src/Form/Control/TreeItemSelector.php
@@ -131,6 +131,10 @@ public function getInput()
      */
     public function getValue()
     {
+        if (is_scalar($this->entityField->get())) {
+            return $this->entityField->get();
+        }
+
         return $this->getApp()->uiPersistence->typecastSaveField($this->entityField->getField(), $this->entityField->get());
     }