diff --git a/litellm/proxy/proxy_config.yaml b/litellm/proxy/proxy_config.yaml
index acb792aec..6be2454a2 100644
--- a/litellm/proxy/proxy_config.yaml
+++ b/litellm/proxy/proxy_config.yaml
@@ -1,8 +1,9 @@
 model_list:
-  - model_name: gpt-4
+  - model_name: fake-openai-endpoint
     litellm_params:
-      model: openai/gpt-4o
-      api_key: os.environ/OPENAI_API_KEY
+      model: openai/fake
+      api_key: fake-key
+      api_base: https://exampleopenaiendpoint-production.up.railway.app/
 
 guardrails:
   - guardrail_name: "custom-pre-guard"
diff --git a/tests/otel_tests/test_guardrails.py b/tests/otel_tests/test_guardrails.py
index 34f14186e..2b5bfc644 100644
--- a/tests/otel_tests/test_guardrails.py
+++ b/tests/otel_tests/test_guardrails.py
@@ -217,3 +217,24 @@ async def test_bedrock_guardrail_triggered():
             print(e)
             assert "GUARDRAIL_INTERVENED" in str(e)
             assert "Violated guardrail policy" in str(e)
+
+
+@pytest.mark.asyncio
+async def test_custom_guardrail_during_call_triggered():
+    """
+    - Tests a request where our bedrock guardrail should be triggered
+    - Assert that the guardrails applied are returned in the response headers
+    """
+    async with aiohttp.ClientSession() as session:
+        try:
+            response, headers = await chat_completion(
+                session,
+                "sk-1234",
+                model="fake-openai-endpoint",
+                messages=[{"role": "user", "content": f"Hello do you like litellm?"}],
+                guardrails=["custom-during-guard"],
+            )
+            pytest.fail("Should have thrown an exception")
+        except Exception as e:
+            print(e)
+            assert "Guardrail failed words - `litellm` detected" in str(e)