diff --git a/src/Avalonia.Controls.ColorPicker/ColorSpectrum/ColorSpectrum.Properties.cs b/src/Avalonia.Controls.ColorPicker/ColorSpectrum/ColorSpectrum.Properties.cs
index 39b7b7f660..5c7de2459b 100644
--- a/src/Avalonia.Controls.ColorPicker/ColorSpectrum/ColorSpectrum.Properties.cs
+++ b/src/Avalonia.Controls.ColorPicker/ColorSpectrum/ColorSpectrum.Properties.cs
@@ -240,7 +240,7 @@ namespace Avalonia.Controls.Primitives
         public ColorComponent ThirdComponent
         {
             get => GetValue(ThirdComponentProperty);
-            private set => SetValue(ThirdComponentProperty, value);
+            protected set => SetValue(ThirdComponentProperty, value);
         }
     }
 }