diff --git a/src/PersistentData/PersistentDataManager.php b/src/PersistentData/PersistentDataManager.php
index 9ede090..4388d9f 100644
--- a/src/PersistentData/PersistentDataManager.php
+++ b/src/PersistentData/PersistentDataManager.php
@@ -13,9 +13,9 @@ class PersistentDataManager implements IPersistentDataManager
 {
     private IConnection $dbConnection;
 
-    private IAuditLogger $auditLogger;
+    private ?IAuditLogger $auditLogger;
 
-    public function __construct(IConnection $dbConnection, IAuditLogger $auditLogger)
+    public function __construct(IConnection $dbConnection, ?IAuditLogger $auditLogger = null)
     {
         $this->dbConnection = $dbConnection;
         $this->auditLogger = $auditLogger;