diff --git a/zh_CN/guides/model-configuration/customizable-model.md b/zh_CN/guides/model-configuration/customizable-model.md
index 3d5df38..4cc3ea9 100644
--- a/zh_CN/guides/model-configuration/customizable-model.md
+++ b/zh_CN/guides/model-configuration/customizable-model.md
@@ -134,7 +134,7 @@ provider_credential_schema:
     ```python
     def _invoke(self, model: str, credentials: dict,
                 prompt_messages: list[PromptMessage], model_parameters: dict,
-                tools: Optional[list[PromptMessageTool]] = None, stop: Optional[List[str]] = None,
+                tools: Optional[list[PromptMessageTool]] = None, stop: Optional[list[str]] = None,
                 stream: bool = True, user: Optional[str] = None) \
             -> Union[LLMResult, Generator]:
         """