diff --git a/bitdust/customer/supplier_connector.py b/bitdust/customer/supplier_connector.py
index 662174776..cfa36de48 100644
--- a/bitdust/customer/supplier_connector.py
+++ b/bitdust/customer/supplier_connector.py
@@ -164,6 +164,7 @@ def total_connectors():
 
 
 class SupplierConnector(automat.Automat):
+
     """
     This class implements all the functionality of the ``supplier_connector()``
     state machine.
@@ -607,6 +608,8 @@ def doDestroyMe(self, *args, **kwargs):
         self.destroy()
 
     def _supplier_service_acked(self, response, info):
+        if _Debug:
+            lg.args(_DebugLevel, response=response, info=info)
         if not self.request_packet_id:
             lg.warn('received "old" response : %r' % response)
             return
@@ -623,7 +626,6 @@ def _supplier_service_acked(self, response, info):
                 lg.exc()
             if _Debug:
                 lg.args(_DebugLevel, response=response, info=info, contract=the_contract)
-            self.storage_contract = the_contract
             if the_contract:
                 if not accounting.verify_storage_contract(the_contract):
                     lg.err('received storage contract from %r is not valid' % self.supplier_idurl)
@@ -632,6 +634,7 @@ def _supplier_service_acked(self, response, info):
                     return
                 from bitdust.customer import payment
                 payment.save_storage_contract(self.supplier_idurl, the_contract)
+                self.storage_contract = the_contract
         self.automat('ack', response)
 
     def _supplier_service_failed(self, response, info):
diff --git a/bitdust/interface/api.py b/bitdust/interface/api.py
index 01951e11b..380b5f611 100644
--- a/bitdust/interface/api.py
+++ b/bitdust/interface/api.py
@@ -4463,10 +4463,7 @@ def suppliers_list(customer_id=None, verbose=False):
             customer_idurl = global_id.GlobalUserToIDURL(customer_id, as_field=False)
     customer_idurl = id_url.field(customer_idurl)
     results = []
-    for (
-        pos,
-        supplier_idurl,
-    ) in enumerate(contactsdb.suppliers(customer_idurl)):
+    for pos, supplier_idurl in enumerate(contactsdb.suppliers(customer_idurl)):
         if not supplier_idurl:
             r = {
                 'position': pos,