diff --git a/nucypher/blockchain/eth/domains.py b/nucypher/blockchain/eth/domains.py
index ed2b76efe..588606a39 100644
--- a/nucypher/blockchain/eth/domains.py
+++ b/nucypher/blockchain/eth/domains.py
@@ -37,7 +37,7 @@ class TACoDomain:
         return self.name
 
     def __hash__(self) -> int:
-        return hash(self.name)
+        return hash((self.name, self.eth_chain, self.polygon_chain))
 
     def __bytes__(self) -> bytes:
         return self.name.encode()
diff --git a/tests/integration/config/test_storages.py b/tests/integration/config/test_storages.py
index 4124f8a07..733b508db 100644
--- a/tests/integration/config/test_storages.py
+++ b/tests/integration/config/test_storages.py
@@ -6,7 +6,7 @@ from nucypher.config.constants import TEMPORARY_DOMAIN_NAME
 from nucypher.config.storages import ForgetfulNodeStorage, TemporaryFileBasedNodeStorage
 from nucypher.policy.payment import SubscriptionManagerPayment
 from nucypher.utilities.networking import LOOPBACK_ADDRESS
-from tests.constants import MOCK_ETH_PROVIDER_URI, TESTERCHAIN_CHAIN_ID
+from tests.constants import MOCK_ETH_PROVIDER_URI
 from tests.utils.ursula import select_test_port
 
 ADDITIONAL_NODES_TO_LEARN_ABOUT = 10