diff --git a/tests/test_litellm/litellm_core_utils/test_exception_mapping_utils.py b/tests/test_litellm/litellm_core_utils/test_exception_mapping_utils.py
index 26153e360e9..bfd6eb9a3fc 100644
--- a/tests/test_litellm/litellm_core_utils/test_exception_mapping_utils.py
+++ b/tests/test_litellm/litellm_core_utils/test_exception_mapping_utils.py
@@ -728,6 +728,8 @@ def test_openai_genuine_500_still_maps_to_internal_server_error():
         ("Connection refused", True),
         ("The server had an error processing your request.", False),
         ("invalid_request_error", False),
+        (None, False),
+        (123, False),
     ],
 )
 def test_is_error_str_connection_error(error_str, expected):