diff --git a/counterparty-core/counterpartycore/test/regtest/scenarios/scenario_last_mempool.py b/counterparty-core/counterpartycore/test/regtest/scenarios/scenario_last_mempool.py
index c3d3671b84..3f5254d9c3 100644
--- a/counterparty-core/counterpartycore/test/regtest/scenarios/scenario_last_mempool.py
+++ b/counterparty-core/counterpartycore/test/regtest/scenarios/scenario_last_mempool.py
@@ -199,7 +199,7 @@
                             "0355f42b0e4c7b6e73addef75deab673b9727225a3d529511ef28f5df36472826c",
                         ],
                     },
-                    "destination": "",
+                    "destination": None,
                     "fee": 10000,
                     "source": "$ADDRESS_4",
                     "unpacked_data": {
diff --git a/counterparty-core/counterpartycore/test/regtest/utxosupport_propertytest.py b/counterparty-core/counterpartycore/test/regtest/utxosupport_propertytest.py
index 1688675c3b..bee6638616 100644
--- a/counterparty-core/counterpartycore/test/regtest/utxosupport_propertytest.py
+++ b/counterparty-core/counterpartycore/test/regtest/utxosupport_propertytest.py
@@ -108,7 +108,7 @@ def attach_asset(self, balance, attach_quantity):
             },
         )
         self.upsert_balance(source, asset, -attach_quantity, None)
-        self.upsert_balance(f"{tx_hash}:1", asset, attach_quantity, source)
+        self.upsert_balance(f"{tx_hash}:0", asset, attach_quantity, source)
 
     @settings(deadline=None)
     def move_asset(self, balance, destination):