diff --git a/backend/app/api/tickets.py b/backend/app/api/tickets.py
index 5308b1e..bb4f2f7 100644
--- a/backend/app/api/tickets.py
+++ b/backend/app/api/tickets.py
@@ -42,7 +42,8 @@ def _map_priority(raw: str) -> str:
 def _transform_ticket(t: dict) -> dict:
     """Transform a Gongdan ticket to the frontend TicketData shape."""
     return {
-        "id": t.get("ticketNumber", t.get("id", "")),
+        "id": t.get("id", ""),
+        "ticketNumber": t.get("ticketNumber", ""),
         "title": t.get("description", "")[:120] or "No description",
         "status": _map_status(t.get("status", "")),
         "priority": _map_priority(t.get("priority", "")),