diff --git a/python/sglang/srt/managers/schedule_batch.py b/python/sglang/srt/managers/schedule_batch.py
index ae9e4a0b1..72a0f711f 100644
--- a/python/sglang/srt/managers/schedule_batch.py
+++ b/python/sglang/srt/managers/schedule_batch.py
@@ -1104,7 +1104,11 @@ class Req:
         if self.has_log_time_stats:
             return
 
-        bootstrap_info = f", bootstrap_room={self.bootstrap_room}" if self.bootstrap_room is not None else ""
+        bootstrap_info = (
+            f", bootstrap_room={self.bootstrap_room}"
+            if self.bootstrap_room is not None
+            else ""
+        )
         prefix = f"Req Time Stats(rid={self.rid}{bootstrap_info}, input len={len(self.origin_input_ids)}, output len={len(self.output_ids)}, type={self.time_stats.disagg_mode_str()})"
         logger.info(f"{prefix}: {self.time_stats.convert_to_duration()}")
         self.has_log_time_stats = True