diff --git a/src/Markup/Avalonia.Markup.Xaml.Loader/CompilerExtensions/AvaloniaXamlIlLanguage.cs b/src/Markup/Avalonia.Markup.Xaml.Loader/CompilerExtensions/AvaloniaXamlIlLanguage.cs
index e9bf20a626..1db0208310 100644
--- a/src/Markup/Avalonia.Markup.Xaml.Loader/CompilerExtensions/AvaloniaXamlIlLanguage.cs
+++ b/src/Markup/Avalonia.Markup.Xaml.Loader/CompilerExtensions/AvaloniaXamlIlLanguage.cs
@@ -49,6 +49,7 @@ namespace Avalonia.Markup.Xaml.XamlIl.CompilerExtensions
                 XmlNamespaceInfoProvider =
                     typeSystem.GetType("Avalonia.Markup.Xaml.XamlIl.Runtime.IAvaloniaXamlIlXmlNamespaceInfoProvider"),
                 DeferredContentPropertyAttributes = {typeSystem.GetType("Avalonia.Metadata.TemplateContentAttribute")},
+                DeferredContentExecutorCustomizationDefaultTypeParameter = typeSystem.GetType("Avalonia.Controls.IControl"),
                 DeferredContentExecutorCustomizationTypeParameterDeferredContentAttributePropertyNames = new List<string>
                 {
                     "TemplateResultType"
diff --git a/src/Markup/Avalonia.Markup.Xaml.Loader/xamlil.github b/src/Markup/Avalonia.Markup.Xaml.Loader/xamlil.github
index 22766f0922..8e20d65eb5 160000
--- a/src/Markup/Avalonia.Markup.Xaml.Loader/xamlil.github
+++ b/src/Markup/Avalonia.Markup.Xaml.Loader/xamlil.github
@@ -1 +1 @@
-Subproject commit 22766f092201ea634356b5f1ef2193b0f0d6695c
+Subproject commit 8e20d65eb5f1efbae08e49b18f39bfdce32df7b3