diff --git a/htdocs/core/class/html.formadmin.class.php b/htdocs/core/class/html.formadmin.class.php
index a0d0dd2758e..2cc15a3dd42 100644
--- a/htdocs/core/class/html.formadmin.class.php
+++ b/htdocs/core/class/html.formadmin.class.php
@@ -36,7 +36,7 @@ class FormAdmin
 	/**
 	 *  Constructor
 	 *
-	 *  @param      DoliDB      $db      Database handler
+	 *  @param      DoliDB|null      $db      Database handler
 	 */
 	public function __construct($db)
 	{