diff --git a/src/admin/pages/Attendance.tsx b/src/admin/pages/Attendance.tsx
index e0de6a1..6c017ad 100644
--- a/src/admin/pages/Attendance.tsx
+++ b/src/admin/pages/Attendance.tsx
@@ -131,6 +131,7 @@ export default function Attendance() {
   const latestActionRef = useRef<string | null>(null);
 
   useEffect(() => {
+    mountedRef.current = true;
     return () => {
       mountedRef.current = false;
       if (geoAbortRef.current) geoAbortRef.current.abort();