diff --git a/samples/ControlCatalog.Web/ControlCatalog.Web.csproj b/samples/ControlCatalog.Web/ControlCatalog.Web.csproj
index 67c130648f..0377e1ff7d 100644
--- a/samples/ControlCatalog.Web/ControlCatalog.Web.csproj
+++ b/samples/ControlCatalog.Web/ControlCatalog.Web.csproj
@@ -4,6 +4,10 @@
     <Nullable>enable</Nullable>
   </PropertyGroup>
 
+  <ItemGroup>
+    <BlazorLinkerDescriptor Include="LinkerConfig.xml" />
+  </ItemGroup>
+
   <!-- In debug, make builds faster by reducing optimizations -->
   <PropertyGroup Condition="'$(Configuration)' == 'Debug'">
     <WasmNativeStrip>false</WasmNativeStrip>
@@ -14,25 +18,25 @@
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|AnyCPU'">
     <Optimize>true</Optimize>
     <WasmNativeStrip>true</WasmNativeStrip>
-	<EmccCompileOptimizationFlag>-O2</EmccCompileOptimizationFlag>
-    <RunAOTCompilation>false</RunAOTCompilation>
+    <EmccCompileOptimizationFlag>-O3</EmccCompileOptimizationFlag>
+    <RunAOTCompilation>true</RunAOTCompilation>
   </PropertyGroup>
-  
+
   <ItemGroup>
-    <PackageReference Include="HarfBuzzSharp.NativeAssets.WebAssembly" Version="2.8.2-preview.171" />
-    <PackageReference Include="SkiaSharp.NativeAssets.WebAssembly" Version="2.88.0-preview.171" />
-    <PackageReference Include="Microsoft.AspNetCore.Components.WebAssembly" Version="6.0.0" />
-    <PackageReference Include="Microsoft.AspNetCore.Components.WebAssembly.DevServer" Version="6.0.0" PrivateAssets="all" />
+    <PackageReference Include="HarfBuzzSharp.NativeAssets.WebAssembly" Version="2.8.2-preview.171"/>
+    <PackageReference Include="SkiaSharp.NativeAssets.WebAssembly" Version="2.88.0-preview.171"/>
+    <PackageReference Include="Microsoft.AspNetCore.Components.WebAssembly" Version="6.0.0"/>
+    <PackageReference Include="Microsoft.AspNetCore.Components.WebAssembly.DevServer" Version="6.0.0" PrivateAssets="all"/>
   </ItemGroup>
 
   <ItemGroup>
-    <NativeFileReference Include="$(HarfBuzzSharpStaticLibraryPath)\2.0.23\libHarfBuzzSharp.a" />
-    <NativeFileReference Include="$(SkiaSharpStaticLibraryPath)\2.0.23\libSkiaSharp.a" />
+    <NativeFileReference Include="$(HarfBuzzSharpStaticLibraryPath)\2.0.23\libHarfBuzzSharp.a"/>
+    <NativeFileReference Include="$(SkiaSharpStaticLibraryPath)\2.0.23\libSkiaSharp.a"/>
   </ItemGroup>
 
   <ItemGroup>
-    <ProjectReference Include="..\..\src\Web\Avalonia.Web.Blazor\Avalonia.Web.Blazor.csproj" />
-    <ProjectReference Include="..\ControlCatalog\ControlCatalog.csproj" />
+    <ProjectReference Include="..\..\src\Web\Avalonia.Web.Blazor\Avalonia.Web.Blazor.csproj"/>
+    <ProjectReference Include="..\ControlCatalog\ControlCatalog.csproj"/>
   </ItemGroup>
 
 </Project>
diff --git a/samples/ControlCatalog.Web/LinkerConfig.xml b/samples/ControlCatalog.Web/LinkerConfig.xml
new file mode 100644
index 0000000000..5839a0fe03
--- /dev/null
+++ b/samples/ControlCatalog.Web/LinkerConfig.xml
@@ -0,0 +1,28 @@
+<?xml version="1.0" encoding="UTF-8" ?>
+<!--
+  This file specifies which parts of the BCL or Blazor packages must not be
+  stripped by the IL Linker even if they aren't referenced by user code.
+-->
+<linker>
+  <assembly fullname="mscorlib">
+    <!--
+      Preserve the methods in WasmRuntime because its methods are called by 
+      JavaScript client-side code to implement timers.
+      Fixes: https://github.com/dotnet/blazor/issues/239
+    -->
+    <type fullname="System.Threading.WasmRuntime"/>
+  </assembly>
+
+  <assembly fullname="System.Core">
+    <!--
+      System.Linq.Expressions* is required by Json.NET and any 
+      expression.Compile caller. The assembly isn't stripped.
+    -->
+    <type fullname="System.Linq.Expressions*"/>
+  </assembly>
+  <!--
+    In this example, the app's entry point assembly is listed. The assembly
+    isn't stripped by the IL Linker.
+  -->
+  <assembly fullname="ControlCatalog" preserve="All" />
+</linker>