diff --git a/src/BreCalClient/AppNotification.cs b/src/BreCalClient/AppNotification.cs
index ea3eb02..2215f26 100644
--- a/src/BreCalClient/AppNotification.cs
+++ b/src/BreCalClient/AppNotification.cs
@@ -8,6 +8,7 @@ using System.Collections.Generic;
 using System.Collections.ObjectModel;
 using ToastNotifications.Core;
 using BreCalClient.misc.Model;
+using System.Runtime.CompilerServices;
 
 namespace BreCalClient
 {
@@ -165,15 +166,23 @@ namespace BreCalClient
                         {
                             vm.ShowAppNotification(toastText, options);
                         });
+                        result = true;
                     }
                 }
             }
+
+            if (result)
+                SaveNotifications(); // store notification ids in config array on change
+
             return result;
         }
 
         internal static void SaveNotifications()
         {
-            Properties.Settings.Default.Notifications.Clear();
+            if (Properties.Settings.Default.Notifications == null)
+                Properties.Settings.Default.Notifications = new();
+            else
+                Properties.Settings.Default.Notifications.Clear();
             foreach (int notification_id in _notifications.Keys)
             {
                 Properties.Settings.Default.Notifications.Add(notification_id.ToString());
diff --git a/src/BreCalClient/MainWindow.xaml.cs b/src/BreCalClient/MainWindow.xaml.cs
index be19337..c7f2ce2 100644
--- a/src/BreCalClient/MainWindow.xaml.cs
+++ b/src/BreCalClient/MainWindow.xaml.cs
@@ -152,6 +152,7 @@ namespace BreCalClient
             };
             this.comboBoxSortOrder.ItemsSource = Enum.GetValues(typeof(Extensions.SortOrder));
             this.comboBoxSortOrder.SelectedIndex = (int)_sortOrder;
+            AppNotification.LoadFromSettings();
         }
 
         private void Window_Closing(object sender, System.ComponentModel.CancelEventArgs e)