diff --git a/tests/acceptance/porter/control/test_porter_web_control_blockchain.py b/tests/acceptance/porter/control/test_porter_web_control_blockchain.py
index 6288a79f2..5c2e8bc28 100644
--- a/tests/acceptance/porter/control/test_porter_web_control_blockchain.py
+++ b/tests/acceptance/porter/control/test_porter_web_control_blockchain.py
@@ -149,7 +149,7 @@ def test_retrieve_cfrags(blockchain_porter,
     cleartext_with_sig_header = blockchain_bob._crypto_power.power_ups(DecryptingPower).keypair.decrypt(policy_message_kit)
     sig_header, remainder = default_constant_splitter(cleartext_with_sig_header, return_remainder=True)
     signature_from_kit, cleartext = signature_splitter(remainder, return_remainder=True)
-    assert signature_from_kit.verify(message=cleartext, verifying_key=policy_message_kit.sender_verifying_key)
+    assert signature_from_kit.verify(message=cleartext, verifying_pk=policy_message_kit.sender_verifying_key)
     assert cleartext == original_message
 
     #
diff --git a/tests/integration/porter/control/test_porter_web_control_federated.py b/tests/integration/porter/control/test_porter_web_control_federated.py
index 4e205d199..cef982ec9 100644
--- a/tests/integration/porter/control/test_porter_web_control_federated.py
+++ b/tests/integration/porter/control/test_porter_web_control_federated.py
@@ -147,7 +147,7 @@ def test_retrieve_cfrags(federated_porter,
     cleartext_with_sig_header = federated_bob._crypto_power.power_ups(DecryptingPower).keypair.decrypt(policy_message_kit)
     sig_header, remainder = default_constant_splitter(cleartext_with_sig_header, return_remainder=True)
     signature_from_kit, cleartext = signature_splitter(remainder, return_remainder=True)
-    assert signature_from_kit.verify(message=cleartext, verifying_key=policy_message_kit.sender_verifying_key)
+    assert signature_from_kit.verify(message=cleartext, verifying_pk=policy_message_kit.sender_verifying_key)
     assert cleartext == original_message
 
     #