diff --git a/src/Squidex.Domain.Apps.Events/Apps/Old/AppClientChanged.cs b/src/Squidex.Domain.Apps.Events/Apps/Old/AppClientChanged.cs
index 612dfa357..6370c47d7 100644
--- a/src/Squidex.Domain.Apps.Events/Apps/Old/AppClientChanged.cs
+++ b/src/Squidex.Domain.Apps.Events/Apps/Old/AppClientChanged.cs
@@ -12,7 +12,7 @@ using Squidex.Infrastructure.Reflection;
 
 namespace Squidex.Domain.Apps.Events.Apps.Old
 {
-    [EventType(nameof(AppClientUpdated))]
+    [EventType(nameof(AppClientChanged))]
     public sealed class AppClientChanged : AppEvent, IMigratedEvent
     {
         public string Id { get; set; }
diff --git a/src/Squidex.Domain.Apps.Read.MongoDb/Apps/MongoAppEntityClient.cs b/src/Squidex.Domain.Apps.Read.MongoDb/Apps/MongoAppEntityClient.cs
index 873859585..fde8176cf 100644
--- a/src/Squidex.Domain.Apps.Read.MongoDb/Apps/MongoAppEntityClient.cs
+++ b/src/Squidex.Domain.Apps.Read.MongoDb/Apps/MongoAppEntityClient.cs
@@ -26,7 +26,7 @@ namespace Squidex.Domain.Apps.Read.MongoDb.Apps
         [BsonElement]
         public string Name { get; set; }
 
-        [BsonIgnoreIfDefault]
+        [BsonRequired]
         [BsonElement]
         public AppClientPermission Permission { get; set; }
 
@@ -34,5 +34,10 @@ namespace Squidex.Domain.Apps.Read.MongoDb.Apps
         {
             get { return !string.IsNullOrWhiteSpace(Name) ? Name : Id; }
         }
+
+        public MongoAppEntityClient()
+        {
+            Permission = AppClientPermission.Editor;
+        }
     }
 }
diff --git a/src/Squidex.Domain.Apps.Read/Apps/AppHistoryEventsCreator.cs b/src/Squidex.Domain.Apps.Read/Apps/AppHistoryEventsCreator.cs
index c9b1fac4f..6c8839b5a 100644
--- a/src/Squidex.Domain.Apps.Read/Apps/AppHistoryEventsCreator.cs
+++ b/src/Squidex.Domain.Apps.Read/Apps/AppHistoryEventsCreator.cs
@@ -32,8 +32,11 @@ namespace Squidex.Domain.Apps.Read.Apps
             AddEventMessage<AppClientRevoked>(
                 "revoked client {[Id]}");
 
+            AddEventMessage<AppClientUpdated>(
+                "updated client {[Id]}");
+
             AddEventMessage<AppClientRenamed>(
-                "named client {[Id]} as {[Name]}");
+                "renamed client {[Id]} to {[Name]}");
 
             AddEventMessage<AppLanguageAdded>(
                 "added language {[Language]}");
diff --git a/src/Squidex/Controllers/Api/Apps/Models/UpdateAppClientDto.cs b/src/Squidex/Controllers/Api/Apps/Models/UpdateAppClientDto.cs
index 13d20bf25..2140f52ef 100644
--- a/src/Squidex/Controllers/Api/Apps/Models/UpdateAppClientDto.cs
+++ b/src/Squidex/Controllers/Api/Apps/Models/UpdateAppClientDto.cs
@@ -7,6 +7,9 @@
 // ==========================================================================
 
 using System.ComponentModel.DataAnnotations;
+using Newtonsoft.Json;
+using Newtonsoft.Json.Converters;
+using Squidex.Domain.Apps.Core.Apps;
 
 namespace Squidex.Controllers.Api.Apps.Models
 {
@@ -19,8 +22,9 @@ namespace Squidex.Controllers.Api.Apps.Models
         public string Name { get; set; }
 
         /// <summary>
-        /// Determines if the client is a reader.
+        /// The permissions of the client.
         /// </summary>
-        public bool? IsReader { get; set; }
+        [JsonConverter(typeof(StringEnumConverter))]
+        public AppClientPermission? Permission { get; set; }
     }
 }
diff --git a/src/Squidex/app/features/settings/pages/clients/client.component.html b/src/Squidex/app/features/settings/pages/clients/client.component.html
index 46b5c3ad7..c6bb7a5b7 100644
--- a/src/Squidex/app/features/settings/pages/clients/client.component.html
+++ b/src/Squidex/app/features/settings/pages/clients/client.component.html
@@ -73,7 +73,6 @@
             <td>Permission</td>
             <td>
                 <select class="form-control" [ngModel]="client.permission" (ngModelChange)="updating.emit($event)">
-                    <option></option>
                     <option *ngFor="let permission of clientPermissions" [ngValue]="permission">{{permission}}</option>
                 </select>
             </td>
diff --git a/tests/Squidex.Domain.Apps.Write.Tests/Apps/AppEventTests.cs b/tests/Squidex.Domain.Apps.Write.Tests/Apps/AppEventTests.cs
new file mode 100644
index 000000000..acb390b7e
--- /dev/null
+++ b/tests/Squidex.Domain.Apps.Write.Tests/Apps/AppEventTests.cs
@@ -0,0 +1,51 @@
+// ==========================================================================
+//  AppEventTests.cs
+//  Squidex Headless CMS
+// ==========================================================================
+//  Copyright (c) Squidex Group
+//  All rights reserved.
+// ==========================================================================
+
+using System;
+using Squidex.Domain.Apps.Core.Apps;
+using Squidex.Domain.Apps.Events;
+using Squidex.Domain.Apps.Events.Apps;
+using Squidex.Domain.Apps.Events.Apps.Old;
+using Squidex.Domain.Apps.Write.TestHelpers;
+using Squidex.Infrastructure;
+using Xunit;
+
+#pragma warning disable CS0612 // Type or member is obsolete
+
+namespace Squidex.Domain.Apps.Write.Apps
+{
+    public class AppEventTests
+    {
+        private readonly RefToken actor = new RefToken("User", Guid.NewGuid().ToString());
+        private readonly NamedId<Guid> appId = new NamedId<Guid>(Guid.NewGuid(), "my-app");
+
+        [Fact]
+        public void Should_migrate_client_changed_as_reader_to_client_updated()
+        {
+            var source = CreateEvent(new AppClientChanged { IsReader = true });
+
+            source.Migrate().ShouldBeSameEvent(CreateEvent(new AppClientUpdated { Permission = AppClientPermission.Reader }));
+        }
+
+        [Fact]
+        public void Should_migrate_client_changed_as_writer_to_client_updated()
+        {
+            var source = CreateEvent(new AppClientChanged { IsReader = false });
+
+            source.Migrate().ShouldBeSameEvent(CreateEvent(new AppClientUpdated { Permission = AppClientPermission.Editor }));
+        }
+
+        private T CreateEvent<T>(T contentEvent) where T : AppEvent
+        {
+            contentEvent.Actor = actor;
+            contentEvent.AppId = appId;
+
+            return contentEvent;
+        }
+    }
+}