diff --git a/Mystify/App.axaml.cs b/Mystify/App.axaml.cs
index e6803c4..1a7bd91 100644
--- a/Mystify/App.axaml.cs
+++ b/Mystify/App.axaml.cs
@@ -1,3 +1,7 @@
+// Author: Gockner, Simon
+// Created: 2021-04-06
+// Copyright(c) 2021 SimonG. All Rights Reserved.
+
 using System.Collections.Generic;
 using Avalonia;
 using Avalonia.Controls;
diff --git a/Mystify/Program.cs b/Mystify/Program.cs
index 7b3427d..694ebb4 100644
--- a/Mystify/Program.cs
+++ b/Mystify/Program.cs
@@ -1,4 +1,8 @@
-using Avalonia;
+// Author: Gockner, Simon
+// Created: 2021-04-06
+// Copyright(c) 2021 SimonG. All Rights Reserved.
+
+using Avalonia;
 using Avalonia.ReactiveUI;
 
 namespace Mystify
diff --git a/Mystify/ViewLocator.cs b/Mystify/ViewLocator.cs
index 3b30d66..75a34da 100644
--- a/Mystify/ViewLocator.cs
+++ b/Mystify/ViewLocator.cs
@@ -1,3 +1,7 @@
+// Author: Gockner, Simon
+// Created: 2021-04-06
+// Copyright(c) 2021 SimonG. All Rights Reserved.
+
 using System;
 using Avalonia.Controls;
 using Avalonia.Controls.Templates;
diff --git a/Mystify/ViewModels/MainWindowViewModel.cs b/Mystify/ViewModels/MainWindowViewModel.cs
index 209befc..fad1f10 100644
--- a/Mystify/ViewModels/MainWindowViewModel.cs
+++ b/Mystify/ViewModels/MainWindowViewModel.cs
@@ -1,4 +1,8 @@
-using System;
+// Author: Gockner, Simon
+// Created: 2021-04-06
+// Copyright(c) 2021 SimonG. All Rights Reserved.
+
+using System;
 using System.Collections.Generic;
 using System.Text;
 
@@ -6,6 +10,6 @@ namespace Mystify.ViewModels
 {
     public class MainWindowViewModel : ViewModelBase
     {
-        public string Greeting => "Welcome to Avalonia!";
+        public string Greeting => "Test";
     }
 }
diff --git a/Mystify/ViewModels/ViewModelBase.cs b/Mystify/ViewModels/ViewModelBase.cs
index a8f7322..341eceb 100644
--- a/Mystify/ViewModels/ViewModelBase.cs
+++ b/Mystify/ViewModels/ViewModelBase.cs
@@ -1,4 +1,8 @@
-using System;
+// Author: Gockner, Simon
+// Created: 2021-04-06
+// Copyright(c) 2021 SimonG. All Rights Reserved.
+
+using System;
 using System.Linq.Expressions;
 using System.Reflection;
 using Avalonia.Controls;
diff --git a/Mystify/Views/MainWindow.axaml.cs b/Mystify/Views/MainWindow.axaml.cs
index 40556ef..0006aad 100644
--- a/Mystify/Views/MainWindow.axaml.cs
+++ b/Mystify/Views/MainWindow.axaml.cs
@@ -1,3 +1,7 @@
+// Author: Gockner, Simon
+// Created: 2021-04-06
+// Copyright(c) 2021 SimonG. All Rights Reserved.
+
 using System.ComponentModel;
 using Avalonia;
 using Avalonia.Controls;