diff --git a/astrbot/core/pipeline/scheduler.py b/astrbot/core/pipeline/scheduler.py
index 4af41eef2..ca69b8475 100644
--- a/astrbot/core/pipeline/scheduler.py
+++ b/astrbot/core/pipeline/scheduler.py
@@ -87,9 +87,7 @@ class PipelineScheduler:
             await self._process_stages(event)
 
             # 发送一个空消息, 以便于后续的处理
-            if (
-                isinstance(event, WebChatMessageEvent | WecomAIBotMessageEvent)
-            ):
+            if isinstance(event, WebChatMessageEvent | WecomAIBotMessageEvent):
                 await event.send(None)
 
             logger.debug("pipeline 执行完毕。")
diff --git a/astrbot/core/platform/sources/wecom_ai_bot/wecomai_event.py b/astrbot/core/platform/sources/wecom_ai_bot/wecomai_event.py
index ec1c7bffa..f27d4671e 100644
--- a/astrbot/core/platform/sources/wecom_ai_bot/wecomai_event.py
+++ b/astrbot/core/platform/sources/wecom_ai_bot/wecomai_event.py
@@ -14,6 +14,7 @@ from .wecomai_webhook import WecomAIBotWebhookClient
 
 class WecomAIBotMessageEvent(AstrMessageEvent):
     """企业微信智能机器人消息事件"""
+
     STREAM_FLUSH_INTERVAL = 0.5
 
     def __init__(