diff --git a/htdocs/compta/facture/class/facture-rec.class.php b/htdocs/compta/facture/class/facture-rec.class.php
index 8707b73262f..488fdaf21e8 100644
--- a/htdocs/compta/facture/class/facture-rec.class.php
+++ b/htdocs/compta/facture/class/facture-rec.class.php
@@ -960,7 +960,7 @@ class FactureRec extends CommonInvoice
 	/**
 	 * Return the next date of
 	 *
-	 * @return	timestamp	false if KO, timestamp if OK
+	 * @return  int|false   false if KO, timestamp if OK
 	 */
 	function getNextDate()
 	{