diff --git a/src/Avalonia.Controls/Button.cs b/src/Avalonia.Controls/Button.cs
index b54eb2ac57..6a4bcc89a7 100644
--- a/src/Avalonia.Controls/Button.cs
+++ b/src/Avalonia.Controls/Button.cs
@@ -90,7 +90,7 @@ namespace Avalonia.Controls
             IsCancelProperty.Changed.Subscribe(IsCancelChanged);
         }
 
-        public Button()
+        public Button(bool test = false)
         {
             UpdatePseudoClasses(IsPressed);
         }