diff --git a/src/Concrete/Entity/OrmEntityExtended.php b/src/Concrete/Entity/OrmEntityExtended.php
index 25912bd..d1ecdcb 100644
--- a/src/Concrete/Entity/OrmEntityExtended.php
+++ b/src/Concrete/Entity/OrmEntityExtended.php
@@ -135,7 +135,7 @@ public function toArray()
     /**
      * {@inheritdoc}
      */
-    public function unserialize(string $data)
+    public function unserialize($data)
     {
         $arr = unserialize($data);