diff --git a/apps/worker/worker_app/tasks/generation.py b/apps/worker/worker_app/tasks/generation.py
index b45b57b7d..72a4de854 100755
--- a/apps/worker/worker_app/tasks/generation.py
+++ b/apps/worker/worker_app/tasks/generation.py
@@ -778,7 +778,7 @@ def generate_video(self, task_id: str) -> dict:
             verify_url = get_signed_download_url(file_url, expires_seconds=300) or file_url
             if not _verify_url_accessible(verify_url):
                 # 预签名 URL 也访问失败时，退一步用 object_exists 确认上传成功
-                from video_processing.oss_helpers import oss_bucket, normalize_storage_key
+                from video_processing.oss_helpers import normalize_storage_key, oss_bucket
 
                 bucket = oss_bucket()
                 key = normalize_storage_key(file_url)