diff --git a/ui/lib/activity.dart b/ui/lib/activity.dart
index 08db836..52dca61 100644
--- a/ui/lib/activity.dart
+++ b/ui/lib/activity.dart
@@ -151,7 +151,7 @@ class ActivityDataSource extends DataTableSource {
               child: IconButton(
                   onPressed: () => onDelete!(activity.id!),
                   icon: const Icon(Icons.delete))))
-          : const DataCell(Text(""))
+          : const DataCell(Text("-"))
     ]);
   }