diff --git a/gestion/ldap_crans.py b/gestion/ldap_crans.py
index 64117dca..aa69bc5d 100755
--- a/gestion/ldap_crans.py
+++ b/gestion/ldap_crans.py
@@ -3351,7 +3351,7 @@ class Facture(BaseClasseCrans):
         url += "&no_note=1"
         url += "&return=http://factures.crans.org/return"
         url += "&cancel_return=http://factures.crans.org/cancel"
-        url += "&invoice=12345" # num de facture
+        url += "&invoice="+self.numero() # num de facture
 
         item_id = 0
         for item in self.articles():