diff --git a/backend/app/services/subscribestar_client.py b/backend/app/services/subscribestar_client.py
index 43f07f5..47eba1e 100644
--- a/backend/app/services/subscribestar_client.py
+++ b/backend/app/services/subscribestar_client.py
@@ -199,7 +199,7 @@ def _extract_content(chunk: str) -> str:
 
 def _attachment_item(
     frag: str, base: str, post_id: str, *, kind: str, title_marker: str, url_attr: str
-) -> "MediaItem | None":
+) -> MediaItem | None:
     """One doc/audio attachment from its preview block — gallery-dl's
     `_media_from_post` attachment/audio fields. `url_attr` is the URL-bearing
     attribute (`href="` for docs, `src="` for audio); `title_marker` precedes the