diff --git a/invoice.py b/invoice.py
index 0574b30..e2ad490 100644
--- a/invoice.py
+++ b/invoice.py
@@ -843,7 +843,7 @@ class GenerateFacturae(Wizard):
 
         config = Configuration(1)
         if config.facturae_service:
-            default['certificate'] = config.facturae_service.id
+            default['service'] = config.facturae_service.id
         if config.facturae_certificate:
             default['certificate'] = config.facturae_certificate.id