diff --git a/studio/backend/tests/test_sampling_params_routing.py b/studio/backend/tests/test_sampling_params_routing.py
index 3aad1e2d41..6bd861be0d 100644
--- a/studio/backend/tests/test_sampling_params_routing.py
+++ b/studio/backend/tests/test_sampling_params_routing.py
@@ -830,6 +830,7 @@ def test_local_anthropic_disable_parallel_tool_use_translation():
     invert it into OpenAI-shaped `parallel_tool_calls` so third-party
     clients (Claude SDK, LiteLLM in passthrough mode) opt out of
     parallel calls successfully even on the local model."""
+
     # Mirror the extraction logic in routes/inference.py:anthropic_messages.
     def _extract(tc):
         if isinstance(tc, dict):