diff --git a/tests/unit/confidant/routes/credentials_test.py b/tests/unit/confidant/routes/credentials_test.py
index 7d8e3c78..00db5c33 100644
--- a/tests/unit/confidant/routes/credentials_test.py
+++ b/tests/unit/confidant/routes/credentials_test.py
@@ -458,6 +458,10 @@ def test_create_credential(mocker: MockerFixture, credential: Credential):
          '._get_decrypted_credential_pairs'),
         return_value={'test': 'me'},
     )
+    mocker.patch(
+        'confidant.services.credentialmanager.is_key_value_pair_duplicate',
+        return_value=(False, None),
+    )
     mocker.patch(
         'confidant.routes.credentials.CipherManager.encrypt',
         return_value={'foo': 'baz'}