diff --git a/htdocs/langs/ca_ES/bills.lang b/htdocs/langs/ca_ES/bills.lang
index 790bb7ccc0b..80d66f9d0d1 100644
--- a/htdocs/langs/ca_ES/bills.lang
+++ b/htdocs/langs/ca_ES/bills.lang
@@ -1,4 +1,4 @@
-# Dolibarr language file - Source file is ca_ES - bills
+# Dolibarr language file - Source file is en_US - bills
 CHARSET=UTF-8
 Bill=Factura
 Bills=Factures
@@ -70,7 +70,7 @@ PaymentsReportsForYear=Informes de pagaments de %s
 PaymentsReports=Informes de pagaments
 PaymentsAlreadyDone=Pagaments efectuats
 PaymentsBackAlreadyDone=Reemborsaments ja efectuats
-PaymentRule=
+PaymentRule=Forma de pagament
 PaymentMode=Forma de pagament
 PaymentConditions=Condicions de pagament
 PaymentConditionsShort=Condicions pagament
diff --git a/htdocs/langs/es_ES/bills.lang b/htdocs/langs/es_ES/bills.lang
index 33bee4a2d6c..c3b3d271567 100644
--- a/htdocs/langs/es_ES/bills.lang
+++ b/htdocs/langs/es_ES/bills.lang
@@ -1,4 +1,4 @@
-# Dolibarr language file - Source file is es_ES - bills
+# Dolibarr language file - Source file is en_US - bills
 CHARSET=UTF-8
 Bill=Factura
 Bills=Facturas
@@ -70,7 +70,7 @@ PaymentsReportsForYear=Informes de pagos de %s
 PaymentsReports=Informes de pagos
 PaymentsAlreadyDone=Pagos efectuados
 PaymentsBackAlreadyDone=Reembolsos ya efectuados
-PaymentRule=
+PaymentRule=Forma de pago
 PaymentMode=Forma de pago
 PaymentConditions=Condiciones de pago
 PaymentConditionsShort=Condiciones pago