diff --git a/passerelle_imio_extra_fees/models.py b/passerelle_imio_extra_fees/models.py
index a63582f..668df2f 100644
--- a/passerelle_imio_extra_fees/models.py
+++ b/passerelle_imio_extra_fees/models.py
@@ -63,10 +63,10 @@ class ExtraFees(BaseResource):
         for basket_item in data['data']:
             try:
                 nb_documents += int(basket_item['request_data']['nb_documents'])
-                #  Check if the item in send by mail and if so there is no postage_fee
-                destination = basket_item["request_data"]["form_var_destinations_raw"]
-                if destination and "mail" in destination:
-                    postage_fee = 0
+		destination = basket_item['request_data']['destination']  #  Passed in the workflow webservice
+                #  No postage fees if send by mail
+		if destination and 'mail' in destination:
+                    postage_fee = Decimal(0)
                 if Decimal(basket_item['request_data']['postage_fee']) > postage_fee:
                     postage_fee = Decimal(basket_item['request_data']['postage_fee'])
             except KeyError: