diff --git a/booking.py b/booking.py
index e5da19a..89f14e0 100644
--- a/booking.py
+++ b/booking.py
@@ -578,7 +578,7 @@ class Booking(Workflow, ModelSQL, ModelView):
             ('type', '=', 'revenue'),
             ], limit=1)
 
-        address = Party.address_get(party, type='invoice')
+        address = party.address_get(type='invoice')
         payment_term = data.get('payment_term', None)
         if not payment_term:
             payment_terms = PaymentTerm.search([])