diff --git a/tests/test_litellm/integrations/faros/test_faros_logger.py b/tests/test_litellm/integrations/faros/test_faros_logger.py
index 526329964ac..84a9f375366 100644
--- a/tests/test_litellm/integrations/faros/test_faros_logger.py
+++ b/tests/test_litellm/integrations/faros/test_faros_logger.py
@@ -73,6 +73,25 @@ async def test_user_uid_resolution_priority():
     ]
 
 
+@pytest.mark.asyncio
+async def test_proxy_admin_placeholder_is_not_a_user():
+    from litellm.constants import LITELLM_PROXY_ADMIN_NAME
+
+    logger = make_logger()
+
+    await logger.async_log_success_event(
+        make_kwargs(user_id=LITELLM_PROXY_ADMIN_NAME, end_user="cust"),
+        None,
+        None,
+        None,
+    )
+    await logger.async_log_success_event(
+        make_kwargs(user_id=LITELLM_PROXY_ADMIN_NAME), None, None, None
+    )
+
+    assert [record["user_uid"] for record in logger.log_queue] == ["cust", "unknown"]
+
+
 @pytest.mark.asyncio
 async def test_proxy_admin_placeholder_user_id_is_ignored():
     logger = make_logger()