diff --git a/apps/entities/request_data.py b/apps/entities/request_data.py
index b70ff1e45e324b96ae60000ce91f1dbf035e0344..3ab6babdab9f742986cd901f34a08a2dd0b09f52 100644
--- a/apps/entities/request_data.py
+++ b/apps/entities/request_data.py
@@ -26,7 +26,7 @@ class RequestData(BaseModel):
     group_id: Optional[str] = Field(default=None, alias="groupId", description="群组ID")
     language: str = Field(default="zh", description="语言")
     files: list[str] = Field(default=[], description="文件列表")
-    app: list[RequestDataApp] = Field(default=[], description="应用列表")
+    app: RequestDataApp = Field(default=None, description="应用")
     features: RequestDataFeatures = Field(description="消息功能设置")
 
 
diff --git a/apps/routers/chat.py b/apps/routers/chat.py
index 7d06a604131b276c88d4415a17578faee56ea3f4..1216f639a1303890a813b1c1ffe3cf1cf1866037 100644
--- a/apps/routers/chat.py
+++ b/apps/routers/chat.py
@@ -130,8 +130,8 @@ async def chat(
     if await Activity.is_active(user_sub):
         raise HTTPException(status_code=status.HTTP_429_TOO_MANY_REQUESTS, detail="Too many requests")
 
-    if post_body.app and post_body.app[0].app_id:
-        await AppCenterManager.update_recent_app(user_sub, post_body.app[0].app_id)
+    if post_body.app and post_body.app.app_id:
+        await AppCenterManager.update_recent_app(user_sub, post_body.app.app_id)
     res = chat_generator(post_body, user_sub, session_id)
     return StreamingResponse(
         content=res,