diff --git a/litellm/proxy/batches_endpoints/endpoints.py b/litellm/proxy/batches_endpoints/endpoints.py
index b88d7272945..3936b7f69f2 100644
--- a/litellm/proxy/batches_endpoints/endpoints.py
+++ b/litellm/proxy/batches_endpoints/endpoints.py
@@ -238,8 +238,10 @@ async def _create_provider_batch_for_managed_file(
     response: Final = await llm_router.acreate_batch(
         **request,
         **(
-            {} if input_content is None else {ANTHROPIC_BATCH_INPUT_CONTENT_KWARG: input_content}
-        ),  # mutable-ok: kwargs require a concrete mapping
+            {}
+            if input_content is None
+            else {ANTHROPIC_BATCH_INPUT_CONTENT_KWARG: input_content}  # mutable-ok: kwargs require a concrete mapping
+        ),
     )
     response.input_file_id = input_file_id
     response._hidden_params["unified_file_id"] = unified_file_id