diff --git a/tests/server/test_runtime_profiles.py b/tests/server/test_runtime_profiles.py
index fe16668..329ea9b 100644
--- a/tests/server/test_runtime_profiles.py
+++ b/tests/server/test_runtime_profiles.py
@@ -111,6 +111,8 @@ def test_every_generation_request_includes_context_window(self) -> None:
         generation_payloads = [call.args[1] for call in request_json.call_args_list]
         self.assertEqual([payload["options"]["num_ctx"] for payload in generation_payloads], [32_768] * 3)
         self.assertEqual([payload["options"]["temperature"] for payload in generation_payloads], [0.2, 0.2, 0.1])
+        self.assertEqual([payload["format"]["type"] for payload in generation_payloads], ["object"] * 3)
+        self.assertTrue(all(payload["format"]["additionalProperties"] is False for payload in generation_payloads))
 
 
 if __name__ == "__main__":