diff --git a/invoice.py b/invoice.py
index bcc2b86..0574b30 100644
--- a/invoice.py
+++ b/invoice.py
@@ -842,6 +842,8 @@ class GenerateFacturae(Wizard):
             }
 
         config = Configuration(1)
+        if config.facturae_service:
+            default['certificate'] = config.facturae_service.id
         if config.facturae_certificate:
             default['certificate'] = config.facturae_certificate.id