diff --git a/vllm/v1/executor/ray_utils.py b/vllm/v1/executor/ray_utils.py
index ec0884c014f38..29cf0fc4958ab 100644
--- a/vllm/v1/executor/ray_utils.py
+++ b/vllm/v1/executor/ray_utils.py
@@ -340,9 +340,12 @@ def initialize_ray_cluster(
                 parallel_config.world_size,
                 parallel_config.tensor_parallel_size,
                 parallel_config.pipeline_parallel_size,
-                (f" × prefill_context_parallel_size="
-                 f"{parallel_config.prefill_context_parallel_size}"
-                 if parallel_config.prefill_context_parallel_size > 1 else ""),
+                (
+                    f" × prefill_context_parallel_size="
+                    f"{parallel_config.prefill_context_parallel_size}"
+                    if parallel_config.prefill_context_parallel_size > 1
+                    else ""
+                ),
             )
 
     if ray.is_initialized():