diff --git a/src/Avalonia.Controls/ApplicationLifetimes/ClassicDesktopStyleApplicationLifetime.cs b/src/Avalonia.Controls/ApplicationLifetimes/ClassicDesktopStyleApplicationLifetime.cs
index 07a0510f13..aa4342f075 100644
--- a/src/Avalonia.Controls/ApplicationLifetimes/ClassicDesktopStyleApplicationLifetime.cs
+++ b/src/Avalonia.Controls/ApplicationLifetimes/ClassicDesktopStyleApplicationLifetime.cs
@@ -128,8 +128,6 @@ namespace Avalonia.Controls.ApplicationLifetimes
     public class ClassicDesktopStyleApplicationLifetimeOptions
     {
         public bool ProcessUrlActivationCommandLine { get; set; }
-        
-        public bool IsSingleInstance { get; set; }
     }
 }