1 files changed, 8 insertions, 1 deletions
diff --git a/Core/Authentication/Token/AbstractToken.php b/Core/Authentication/Token/AbstractToken.php
index e62f73c..59510ee 100644
--- a/Core/Authentication/Token/AbstractToken.php
+++ b/Core/Authentication/Token/AbstractToken.php
@@ -142,7 +142,14 @@ abstract class AbstractToken implements TokenInterface
      */
     public function serialize()
     {
-        return serialize(array($this->user, $this->authenticated, $this->roles, $this->attributes));
+        return serialize(
+            array(
+                is_object($this->user) ? clone $this->user : $this->user,
+                $this->authenticated,
+                $this->roles,
+                $this->attributes
+            )
+        );
     }
 
     /**