diff --git a/src/Avalonia.HtmlRenderer/Avalonia.HtmlRenderer.csproj b/src/Avalonia.HtmlRenderer/Avalonia.HtmlRenderer.csproj
index e800a64a17..b51bc65607 100644
--- a/src/Avalonia.HtmlRenderer/Avalonia.HtmlRenderer.csproj
+++ b/src/Avalonia.HtmlRenderer/Avalonia.HtmlRenderer.csproj
@@ -21,9 +21,6 @@
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
   </PropertyGroup>
-  <ItemGroup>
-    <None Remove="Compat\Api.cs" />
-  </ItemGroup>
   <ItemGroup>
     <!-- A reference to the entire .NET Framework is automatically included -->
     <Content Include="external\Source\HtmlRenderer\Core\Utils\ImageError.png" />
@@ -164,4 +161,9 @@
     <PackageReference Include="System.Reactive.Core" Version="3.0.0" />
     <PackageReference Include="System.Reactive.Interfaces" Version="3.0.0" />
   </ItemGroup>
-</Project>
\ No newline at end of file
+  <Target Name="CleansingHeresy" BeforeTargets="CoreResGen">
+    <ItemGroup>
+       <EmbeddedResource Remove="external\\**"/>
+    </ItemGroup>
+  </Target>
+</Project>
diff --git a/src/Markup/Avalonia.Markup.Xaml/Avalonia.Markup.Xaml.csproj b/src/Markup/Avalonia.Markup.Xaml/Avalonia.Markup.Xaml.csproj
index eba7395340..3f7343a1ec 100644
--- a/src/Markup/Avalonia.Markup.Xaml/Avalonia.Markup.Xaml.csproj
+++ b/src/Markup/Avalonia.Markup.Xaml/Avalonia.Markup.Xaml.csproj
@@ -326,4 +326,10 @@
     <PackageReference Include="System.Runtime" Version="4.1.0" />
     <PackageReference Include="System.Text.RegularExpressions" Version="4.1.0" />
   </ItemGroup>
-</Project>
\ No newline at end of file
+  <Target Name="CleansingHeresy" BeforeTargets="CoreResGen">
+    <ItemGroup>
+       <EmbeddedResource Remove="glass\\**"/>
+       <EmbeddedResource Remove="OmniXAML\\**"/>
+    </ItemGroup>
+  </Target>
+</Project>