From d1f569b1b9ce37aa77873b7f2bdb73612c4d9f23 Mon Sep 17 00:00:00 2001
From: Harry Mellor <19981378+hmellor@users.noreply.github.com>
Date: Wed, 30 Apr 2025 03:39:18 +0100
Subject: [PATCH] Fix call to `logger.info_once` (#17416)

Signed-off-by: Harry Mellor <19981378+hmellor@users.noreply.github.com>
---
 vllm/model_executor/guided_decoding/xgrammar_decoding.py | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/vllm/model_executor/guided_decoding/xgrammar_decoding.py b/vllm/model_executor/guided_decoding/xgrammar_decoding.py
index 40f722410ab0..c63acfddec5d 100644
--- a/vllm/model_executor/guided_decoding/xgrammar_decoding.py
+++ b/vllm/model_executor/guided_decoding/xgrammar_decoding.py
@@ -191,9 +191,9 @@ class GrammarConfig:
 
             if model_with_warn is not None and any_whitespace:
                 logger.info_once(
-                    "%s model detected, consider setting "
+                    f"{model_with_warn} model detected, consider setting "
                     "`disable_any_whitespace` to prevent runaway generation "
-                    "of whitespaces.", model_with_warn)
+                    "of whitespaces.")
             # Validate the schema and raise ValueError here if it is invalid.
             # This is to avoid exceptions in model execution, which will crash
             # the engine worker process.