diff --git a/server/activity.go b/server/activity.go
index a75ea92..f991b82 100644
--- a/server/activity.go
+++ b/server/activity.go
@@ -23,7 +23,7 @@ func (s *Server) GetAllActivities(c *gin.Context) (interface{}, error) {
 			History: h,
 		}
 		for id, task := range s.tasks {
-			if h.ID == id {
+			if h.ID == id && task.Exists() {
 				a.Progress = task.Progress()
 			}
 			if h.ID == id && task.Processing {
diff --git a/ui/lib/widgets/progress_indicator.dart b/ui/lib/widgets/progress_indicator.dart
index e93ca26..93f0372 100644
--- a/ui/lib/widgets/progress_indicator.dart
+++ b/ui/lib/widgets/progress_indicator.dart
@@ -1,11 +1,11 @@
 import 'package:flutter/material.dart';
 
 class MyProgressIndicator extends StatelessWidget {
-  double size;
-  Color? color;
-  double? value;
+  final double size;
+  final Color? color;
+  final double? value;
 
-  MyProgressIndicator({super.key, this.size = 30, this.color, this.value});
+  const MyProgressIndicator({super.key, this.size = 30, this.color, this.value});
   @override
   Widget build(BuildContext context) {
     return Center(