diff --git a/lobby/tests.py b/lobby/tests.py
index 4322a32..c537595 100644
--- a/lobby/tests.py
+++ b/lobby/tests.py
@@ -1427,6 +1427,7 @@ class SessionDetailRoundQuestionTests(TestCase):
         self.assertEqual(payload["reveal"]["guesses"][1]["selected_text"], "Edison")
         self.assertTrue(payload["reveal"]["guesses"][1]["is_correct"])
         self.assertIsNone(payload["reveal"]["guesses"][1]["fooled_player_id"])
+        self.assertNotIn("fooled_player_nickname", payload["reveal"]["guesses"][1])
 
     def test_session_detail_includes_canonical_reveal_payload_in_scoreboard_phase(self):
         self.session.status = GameSession.Status.SCOREBOARD