diff --git a/tests/test_magentic.py b/tests/test_magentic.py
index f877970..4223520 100644
--- a/tests/test_magentic.py
+++ b/tests/test_magentic.py
@@ -208,3 +208,4 @@ def _llm() -> str: ...
 
     output = _llm()
     assert isinstance(output, str)
+    _LogAssertion(completion_id=session.last_completion_id(), message_content=output).assert_chat_response()