diff --git a/litellm/llms/sap/chat/handler.py b/litellm/llms/sap/chat/handler.py
index 91cf53dfab7..db8973815b7 100755
--- a/litellm/llms/sap/chat/handler.py
+++ b/litellm/llms/sap/chat/handler.py
@@ -48,7 +48,9 @@ class _StreamParser:
     """Normalize orchestration streaming events into OpenAI-like chunks."""
 
     @staticmethod
-    def _validate_chunk(payload: dict) -> OpenAIChatCompletionChunk:  # mutable-ok: normalizes the raw SSE dict in place (pops empty logprobs) before validation
+    def _validate_chunk(
+        payload: dict,  # mutable-ok: normalized in place (pops empty logprobs) before validation
+    ) -> OpenAIChatCompletionChunk:
         """
         Validate an OpenAI-shaped dict into a chunk, normalizing fields that would
         otherwise break downstream serialization: