diff --git a/apps/jfile/app.py b/apps/jfile/app.py
index 486c4ae..fcf79e3 100644
--- a/apps/jfile/app.py
+++ b/apps/jfile/app.py
@@ -17,9 +17,8 @@ app.mount("/files", StaticFiles(directory="files"), name="files")
 
 # 注册文件定时清理任务
 save_dir = "files"
-file_prefix = "upscaled_"
 retention_hours = settings.file_retention_hours
-cleaner = FileCleaner(save_dir, file_prefix, retention_hours)
+cleaner = FileCleaner(save_dir, retention_hours)
 
 @app.on_event("startup")
 async def startup_event():
diff --git a/apps/jfile/file_cleaner.py b/apps/jfile/file_cleaner.py
index 1a77089..f366b38 100644
--- a/apps/jfile/file_cleaner.py
+++ b/apps/jfile/file_cleaner.py
@@ -3,9 +3,8 @@ import asyncio
 from datetime import datetime, timedelta
 
 class FileCleaner:
-    def __init__(self, target_dir, prefix, retention_hours):
+    def __init__(self, target_dir, retention_hours):
         self.target_dir = target_dir
-        self.prefix = prefix
         self.retention_hours = retention_hours
 
     async def periodic_cleanup(self):
@@ -21,9 +20,10 @@ class FileCleaner:
             return
         cutoff_time = datetime.now() - timedelta(hours=self.retention_hours)
         for filename in os.listdir(self.target_dir):
-            if not filename.startswith(self.prefix):
-                continue
             file_path = os.path.join(self.target_dir, filename)
+            # 跳过目录
+            if os.path.isdir(file_path):
+                continue
             file_time = datetime.fromtimestamp(os.path.getctime(file_path))
             if file_time < cutoff_time:
                 try: