diff --git a/src/rupload/app.py b/src/rupload/app.py
index 6f11a49..c951fa3 100644
--- a/src/rupload/app.py
+++ b/src/rupload/app.py
@@ -277,7 +277,7 @@ async def handle_thumbnail(request: web.Request):
         return web.Response(status=400, text="Invalid file type.")
     
     
-    thumbnail_path = pathlib.Path(request.app.upload_folder).joinpath(".thumbnail").joinpath(pathlib.Path(safe_path).name)
+    thumbnail_path = pathlib.Path(request.app.upload_path).joinpath(".thumbnail").joinpath(pathlib.Path(safe_path).name)
     if not thumbnail_path.parent.exists():
         thumbnail_path.parent.mkdir(exist_ok=True,parents=False)