diff --git a/tests/integration/observability/test_cache_hit_guardrail_metrics.py b/tests/integration/observability/test_cache_hit_guardrail_metrics.py
index 13cd2133d4f..3abb2a7e2be 100644
--- a/tests/integration/observability/test_cache_hit_guardrail_metrics.py
+++ b/tests/integration/observability/test_cache_hit_guardrail_metrics.py
@@ -424,7 +424,7 @@ def test_cache_hit_post_call_reject_keeps_deployment_labels_anthropic(gateway: G
             raised = True
         assert raised, "cache-hit post_call guardrail did not reject /v1/messages"
         assert rig.provider.received.qsize() == 1, rig.provider.drain()
-        _expect_metrics(rig, 1, 0, api_provider="anthropic", pf_id="None")
+        _expect_metrics(rig, 1, 0, api_provider="anthropic")
 
 
 def test_cache_hit_post_call_reject_keeps_deployment_labels_responses(gateway: Gateway, tmp_path: Path) -> None:
@@ -441,7 +441,7 @@ def test_cache_hit_post_call_reject_keeps_deployment_labels_responses(gateway: G
         )
         assert reject.status_code == 400, reject.text
         assert rig.provider.received.qsize() == 1, rig.provider.drain()
-        _expect_metrics(rig, 1, 0, pf_id="None")
+        _expect_metrics(rig, 1, 0)
         _assert_spend(_call_id(reject), rig)