diff --git a/vllm/transformers_utils/configs/mistral.py b/vllm/transformers_utils/configs/mistral.py
index e66f762eb8090..8a9c660b882fd 100644
--- a/vllm/transformers_utils/configs/mistral.py
+++ b/vllm/transformers_utils/configs/mistral.py
@@ -42,7 +42,7 @@ def adapt_config_dict(config_dict: dict[str, Any],
 
     config = PretrainedConfig.from_dict(config_dict)
 
-    logger.debug("Initialized config", config)
+    logger.debug("Initialized config %s", config)
 
     return config