diff --git a/src/Avalonia.Base/Rendering/LayoutPassTiming.cs b/src/Avalonia.Base/Rendering/LayoutPassTiming.cs
index 05dfdb7c42..b4b6d1d4f1 100644
--- a/src/Avalonia.Base/Rendering/LayoutPassTiming.cs
+++ b/src/Avalonia.Base/Rendering/LayoutPassTiming.cs
@@ -7,5 +7,5 @@ namespace Avalonia.Rendering
     /// </summary>
     /// <param name="PassCounter">The number of the layout pass.</param>
     /// <param name="Elapsed">The elapsed time during the layout pass.</param>
-    public readonly record struct LayoutPassTiming(int PassCounter, TimeSpan Elapsed);
+    internal readonly record struct LayoutPassTiming(int PassCounter, TimeSpan Elapsed);
 }
diff --git a/src/Avalonia.Base/Rendering/RendererDiagnostics.cs b/src/Avalonia.Base/Rendering/RendererDiagnostics.cs
index 60165fcbe0..0897cac62e 100644
--- a/src/Avalonia.Base/Rendering/RendererDiagnostics.cs
+++ b/src/Avalonia.Base/Rendering/RendererDiagnostics.cs
@@ -31,7 +31,7 @@ namespace Avalonia.Rendering
         /// <summary>
         /// Gets or sets the last layout pass timing that the renderer may display.
         /// </summary>
-        public LayoutPassTiming LastLayoutPassTiming
+        internal LayoutPassTiming LastLayoutPassTiming
         {
             get => _lastLayoutPassTiming;
             set
diff --git a/src/Avalonia.Base/composition-schema.xml b/src/Avalonia.Base/composition-schema.xml
index b1a1be1973..36fd9fe709 100644
--- a/src/Avalonia.Base/composition-schema.xml
+++ b/src/Avalonia.Base/composition-schema.xml
@@ -40,7 +40,7 @@
         <Property Name="Root" Type="CompositionVisual?"/>
         <Property Name="IsEnabled" Type="bool"/>
         <Property Name="DebugOverlays" Type="RendererDebugOverlays"/>
-        <Property Name="LastLayoutPassTiming" Type="LayoutPassTiming"/>
+        <Property Name="LastLayoutPassTiming" Type="LayoutPassTiming" Internal="true"/>
         <Property Name="Scaling" Type="double"/>
         <Property Name="Size" Type="Size" />
     </Object>