diff --git a/htdocs/salaries/class/paymentsalary.class.php b/htdocs/salaries/class/paymentsalary.class.php
index 68c96888b5c..dc7e310d560 100644
--- a/htdocs/salaries/class/paymentsalary.class.php
+++ b/htdocs/salaries/class/paymentsalary.class.php
@@ -97,6 +97,13 @@ class PaymentSalary extends CommonObject
 	 */
 	public $fk_user_modif;
 
+	/**
+	 * @var array
+	 */
+	public $fields = array(
+		'rowid' => array('type'=>'integer', 'label'=>'TechnicalID', 'enabled'=>1, 'visible'=>-2, 'notnull'=>1, 'index'=>1, 'position'=>1, 'comment'=>'Id'),
+	);
+
 	/**
 	 *	Constructor
 	 *