diff --git a/Models/Audit.php b/Models/Audit.php
index 568a08b..e2c0511 100644
--- a/Models/Audit.php
+++ b/Models/Audit.php
@@ -22,7 +22,7 @@ class Audit
 
     private $subtype = 0;
 
-    private $module = null;
+    private $module = 0;
 
     private $ref = '';