diff --git a/htdocs/core/class/coreobject.class.php b/htdocs/core/class/coreobject.class.php
index 41aae05d74a..bdfe7c3c644 100644
--- a/htdocs/core/class/coreobject.class.php
+++ b/htdocs/core/class/coreobject.class.php
@@ -26,6 +26,9 @@
 require_once DOL_DOCUMENT_ROOT.'/core/class/commonobject.class.php';
 
 // TODO Remove this class (used in Expensereportik and ExpenseReportRule
+/**
+ * CoreObject
+ */
 class CoreObject extends CommonObject
 {
     public $withChild = true;