diff --git a/Manual.md b/Manual.md
index 123b851..f8479b0 100644
--- a/Manual.md
+++ b/Manual.md
@@ -794,7 +794,7 @@ The update routine requires PowerShell 5 and curl, an up to date Windows 10 syst
 
 ### Help > About mpv.net
 
-Shows the mpv.net about dialog.
+Shows the mpv.net about dialog which shows a copyright notice, the versions of mpv.net and libmpv and a license notice (MIT).
 
 ### Exit
 
diff --git a/mpv.net/Properties/AssemblyInfo.cs b/mpv.net/Properties/AssemblyInfo.cs
index 89eb4c2..227a731 100644
--- a/mpv.net/Properties/AssemblyInfo.cs
+++ b/mpv.net/Properties/AssemblyInfo.cs
@@ -10,7 +10,7 @@ using System.Runtime.InteropServices;
 [assembly: AssemblyConfiguration("")]
 [assembly: AssemblyCompany("Frank Skare (stax76)")]
 [assembly: AssemblyProduct("mpv.net")]
-[assembly: AssemblyCopyright("Copyright © 2017-2019 Frank Skare (stax76)")]
+[assembly: AssemblyCopyright("Copyright (c) 2017-2019 Frank Skare (stax76)")]
 [assembly: AssemblyTrademark("")]
 [assembly: AssemblyCulture("")]