diff --git a/lib/ui/views/dashboard_view.dart b/lib/ui/views/dashboard_view.dart
index 8124345..59f1e3e 100644
--- a/lib/ui/views/dashboard_view.dart
+++ b/lib/ui/views/dashboard_view.dart
@@ -556,7 +556,7 @@ class _DashboardViewState extends State<DashboardView> {
                           const Icon(Icons.access_time, size: 17, color: Color(0xFF42A4EF)),
                           const SizedBox(width: 6),
                           Text(
-                            ScheduleEntity.getFormatTime(_selectedHour!),
+                            ScheduleEntity.getFormatTime(_selectedHour!) ?? '',
                             style: const TextStyle(fontSize: 13),
                           ),
                           const Spacer(),