diff --git a/src/Avalonia.Controls/SystemDialog.cs b/src/Avalonia.Controls/SystemDialog.cs
index ee41b94b5a..d2b893df37 100644
--- a/src/Avalonia.Controls/SystemDialog.cs
+++ b/src/Avalonia.Controls/SystemDialog.cs
@@ -18,7 +18,7 @@ namespace Avalonia.Controls
         /// Gets or sets a collection of filters which determine the types of files displayed in an
         /// <see cref="OpenFileDialog"/> or an <see cref="SaveFileDialog"/>.
         /// </summary>
-        public List<FileDialogFilter>? Filters { get; set; } = new List<FileDialogFilter>();
+        public List<FileDialogFilter> Filters { get; set; } = new List<FileDialogFilter>();
 
         /// <summary>
         /// Gets or sets initial file name that is displayed when the dialog is opened.
diff --git a/src/Avalonia.Fonts.Inter/AppBuilderExtension.cs b/src/Avalonia.Fonts.Inter/AppBuilderExtension.cs
index 842629c923..e63032aa56 100644
--- a/src/Avalonia.Fonts.Inter/AppBuilderExtension.cs
+++ b/src/Avalonia.Fonts.Inter/AppBuilderExtension.cs
@@ -1,4 +1,6 @@
-namespace Avalonia.Fonts.Inter
+using Avalonia.Fonts.Inter;
+
+namespace Avalonia
 {
     public static class AppBuilderExtension
     {
diff --git a/src/Avalonia.FreeDesktop/Avalonia.FreeDesktop.csproj b/src/Avalonia.FreeDesktop/Avalonia.FreeDesktop.csproj
index da6ae9e856..d8162c0486 100644
--- a/src/Avalonia.FreeDesktop/Avalonia.FreeDesktop.csproj
+++ b/src/Avalonia.FreeDesktop/Avalonia.FreeDesktop.csproj
@@ -13,7 +13,7 @@
 
   <ItemGroup>
     <PackageReference Include="Tmds.DBus.Protocol" Version="0.14.0" />
-    <PackageReference Include="Tmds.DBus.SourceGenerator" Version="0.0.5" />
+    <PackageReference Include="Tmds.DBus.SourceGenerator" Version="0.0.5" PrivateAssets="All" />
   </ItemGroup>
 
   <ItemGroup>