diff --git a/htdocs/compta/facture/class/facture-rec.class.php b/htdocs/compta/facture/class/facture-rec.class.php
index a71860c01c1..e65db4d2f5e 100644
--- a/htdocs/compta/facture/class/facture-rec.class.php
+++ b/htdocs/compta/facture/class/facture-rec.class.php
@@ -1,6 +1,6 @@
 <?php
 /* Copyright (C) 2003-2005	Rodolphe Quiedeville	<rodolphe@quiedeville.org>
- * Copyright (C) 2004-2015	Laurent Destailleur		<eldy@users.sourceforge.net>
+ * Copyright (C) 2004-2019	Laurent Destailleur		<eldy@users.sourceforge.net>
  * Copyright (C) 2009-2012	Regis Houssin			<regis.houssin@inodbox.com>
  * Copyright (C) 2010-2011	Juanjo Menent			<jmenent@2byte.es>
  * Copyright (C) 2012       Cedric Salvador         <csalvador@gpcsolutions.fr>
@@ -1241,14 +1241,17 @@ class FactureRec extends CommonInvoice
 		$result='';
 
 		$label = '<u>' . $langs->trans("ShowInvoice") . '</u>';
-		if (! empty($this->ref))
+		if (! empty($this->ref)) {
 			$label .= '<br><b>'.$langs->trans('Ref') . ':</b> ' . $this->ref;
-		if (! empty($this->date_last_gen))
+		}
+		if ($this->frequency > 0) {
+			$label .= '<br><b>'.$langs->trans('Frequency') . ':</b> ' . $this->frequency.$this->unit_frequency;
+		}
+		if (! empty($this->date_last_gen)) {
 			$label .= '<br><b>'.$langs->trans('DateLastGeneration') . ':</b> ' . dol_print_date($this->date_last_gen, 'dayhour');
-		if ($this->frequency > 0)
-		{
-			if (! empty($this->date_when))
-			{
+		}
+		if ($this->frequency > 0) {
+			if (! empty($this->date_when)) {
 				$label .= '<br><b>'.$langs->trans('NextDateToExecution') . ':</b> ';
 				$label .= (empty($this->suspended)?'':'<strike>'). dol_print_date($this->date_when, 'day').(empty($this->suspended)?'':'</strike>');	// No hour for this property
 				if (! empty($this->suspended)) $label .= ' ('.$langs->trans("Disabled").')';