diff --git a/benchmarks/benchmark_serving.py b/benchmarks/benchmark_serving.py
index a407a263120bb..bbe712223a530 100644
--- a/benchmarks/benchmark_serving.py
+++ b/benchmarks/benchmark_serving.py
@@ -1,4 +1,4 @@
-"""Benchmark online serving throughput.
+r"""Benchmark online serving throughput.
 
 On the server side, run one of the following commands:
     vLLM OpenAI API server
@@ -963,4 +963,4 @@ def main(args: argparse.Namespace):
     )
 
     args = parser.parse_args()
-    main(args)
\ No newline at end of file
+    main(args)