diff --git a/backend/app/schemas.py b/backend/app/schemas.py
index b14da14..ad3891f 100644
--- a/backend/app/schemas.py
+++ b/backend/app/schemas.py
@@ -281,7 +281,6 @@ class CommentAction(BaseModel):
 # === System Settings ===
 
 class SettingUpdate(BaseModel):
-    key: str
     value: dict | str | list | int | bool | None