diff --git a/src/MockHttp/Extensions/ResponseBuilderLinqToXmlExtensions.cs b/src/MockHttp/Extensions/ResponseBuilderLinqToXmlExtensions.cs
index 9d596686..918bc3cf 100644
--- a/src/MockHttp/Extensions/ResponseBuilderLinqToXmlExtensions.cs
+++ b/src/MockHttp/Extensions/ResponseBuilderLinqToXmlExtensions.cs
@@ -33,7 +33,7 @@ public static IWithContentResult XmlBody(this IWithContent builder, XContainer x
             throw new ArgumentNullException(nameof(xmlContent));
         }
 
-        settings ??= new XmlWriterSettings();
+        settings = settings?.Clone() ?? new XmlWriterSettings();
         // Ensure the stream is not closed/disposed on disposal of the XML writer.
         // It will be disposed by HttpClient instead.
         settings.CloseOutput = false;
diff --git a/test/MockHttp.Tests/Language/Flow/Response/LinqToXmlBodyDoesNotModifySettings.cs b/test/MockHttp.Tests/Language/Flow/Response/LinqToXmlBodyDoesNotModifySettings.cs
new file mode 100644
index 00000000..33c06470
--- /dev/null
+++ b/test/MockHttp.Tests/Language/Flow/Response/LinqToXmlBodyDoesNotModifySettings.cs
@@ -0,0 +1,22 @@
+using System.Xml;
+using System.Xml.Linq;
+using MockHttp.Specs;
+
+namespace MockHttp.Language.Flow.Response;
+
+public sealed class LinqToXmlBodyDoesNotModifySettings : ResponseSpec
+{
+    private static readonly XmlWriterSettings OriginalSettings = new() { CloseOutput = true, Async = false };
+
+    protected override void Given(IResponseBuilder with)
+    {
+        with.XmlBody(XDocument.Parse("<xml/>"), OriginalSettings);
+    }
+
+    protected override Task Should(HttpResponseMessage response)
+    {
+        OriginalSettings.Async.Should().BeFalse();
+        OriginalSettings.CloseOutput.Should().BeTrue();
+        return Task.CompletedTask;
+    }
+}