diff --git a/monkey/tests/monkey_island/stub_propagation_credentials_repository.py b/monkey/tests/monkey_island/stub_propagation_credentials_repository.py
index 7eeec1815..7bf6f85a7 100644
--- a/monkey/tests/monkey_island/stub_propagation_credentials_repository.py
+++ b/monkey/tests/monkey_island/stub_propagation_credentials_repository.py
@@ -32,6 +32,7 @@ PROPAGATION_CREDENTIALS_2 = {
 }
 
 
+# TODO: Use Credentials from common.credentials when serialization is implemented
 class StubPropagationCredentialsRepository(ICredentialsRepository):
     def get_configured_credentials(self) -> Sequence[Credentials]:
         pass
diff --git a/monkey/tests/unit_tests/monkey_island/cc/resources/test_propagation_credentials.py b/monkey/tests/unit_tests/monkey_island/cc/resources/test_propagation_credentials.py
index e1469b1ea..08b8e942f 100644
--- a/monkey/tests/unit_tests/monkey_island/cc/resources/test_propagation_credentials.py
+++ b/monkey/tests/unit_tests/monkey_island/cc/resources/test_propagation_credentials.py
@@ -29,9 +29,10 @@ def test_propagation_credentials_endpoint_get(flask_client):
     resp = flask_client.get(propagation_credentials_url)
 
     assert resp.status_code == 200
-    actual_propagation_credentials = json.loads(resp.data)["propagation_credentials"]
+    actual_propagation_credentials = json.loads(resp.data)
     assert len(actual_propagation_credentials) == 2
 
+    # TODO: delete the removal of monkey_guid key when the serialization of credentials
     del actual_propagation_credentials[0]["monkey_guid"]
     assert actual_propagation_credentials[0] == PROPAGATION_CREDENTIALS_1
     del actual_propagation_credentials[1]["monkey_guid"]