diff --git a/htdocs/core/db/DoliDB.class.php b/htdocs/core/db/DoliDB.class.php
index 1aecd205da3..1ebea289470 100644
--- a/htdocs/core/db/DoliDB.class.php
+++ b/htdocs/core/db/DoliDB.class.php
@@ -233,7 +233,7 @@ abstract class DoliDB implements Database
 	 * Define sort criteria of request
 	 *
 	 * @param	string		$sortfield		List of sort fields, separated by comma. Example: 't1.fielda,t2.fieldb'
-	 * @param	string		$sortorder		Sort order, separated by comma. Example: 'ASC,DESC';
+	 * @param	string		$sortorder		Sort order, separated by comma. Example: 'ASC,DESC'. Note: If the quantity fo sortorder values is lower than sortfield, we used the last value for missing values.
 	 * @return	string						String to provide syntax of a sort sql string
 	 */
 	public function order($sortfield = null, $sortorder = null)