diff --git a/Program.cs b/Program.cs
index 43e044d..1691fbd 100644
--- a/Program.cs
+++ b/Program.cs
@@ -4,6 +4,7 @@ using Microsoft.OpenApi;
 using Shadow.Data;
 using Shadow.Tools;
 using System.Reflection;
+using System.Xml;
 
 var builder = WebApplication.CreateBuilder(args);
 
@@ -17,7 +18,10 @@ builder.Services.AddDbContext<ApplicationDbContext>(options =>
 builder.Services.AddControllers(options =>
 {
 	// Add XML serializer
-	options.OutputFormatters.Add(new XmlSerializerOutputFormatter());
+	// options.RespectBrowserAcceptHeader = true;
+	// options.OutputFormatters.Add(new XmlSerializerOutputFormatter(
+	//	new XmlWriterSettings { OmitXmlDeclaration = true }
+	// ));
 }).AddJsonOptions(options =>
 {
 	// Pretty-print JSON
diff --git a/Shadow.csproj b/Shadow.csproj
index 7898dcb..f1f5b82 100644
--- a/Shadow.csproj
+++ b/Shadow.csproj
@@ -43,8 +43,4 @@
     <PackageReference Include="Swashbuckle.AspNetCore.SwaggerUI" Version="10.0.1" />
   </ItemGroup>
 
-  <ItemGroup>
-    <Folder Include="Mapping\" />
-  </ItemGroup>
-
 </Project>