diff --git a/htdocs/langs/es_ES/main.lang b/htdocs/langs/es_ES/main.lang
index 02b453a182e..038300517a9 100644
--- a/htdocs/langs/es_ES/main.lang
+++ b/htdocs/langs/es_ES/main.lang
@@ -504,7 +504,7 @@ ShowCustomerPreview=Ver historial cliente
 ShowSupplierPreview=Ver historial proveedor
 ShowProspectPreview=Ver historial cliente potencial
 ShowAccountancyPreview=Ver historial contable
-RefCustomer=Ref. client
+RefCustomer=Ref. cliente
 Currency=Divisa
 InfoAdmin=Información para los administradores
 Undo=Anular