diff --git a/src/rupload/app.py b/src/rupload/app.py
index 6e87718..62557d3 100644
--- a/src/rupload/app.py
+++ b/src/rupload/app.py
@@ -243,7 +243,7 @@ async def handle_upload(request: web.Request):
                     )
                 f.write(chunk)
         print(f"File {filename} uploaded successfully.")
-        uploaded_url = self.generate_upload_url(filename)
+        uploaded_url = request.app.generate_upload_url(filename)
         print(f"File {filename} is now available at: {uploaded_url}.")
         return web.HTTPFound(
             "/?message=File is succesfully uploaded and is available here:"