diff --git a/components/script/dom/servoparser/html.rs b/components/script/dom/servoparser/html.rs
index fe6d06064f4..106c6dc7261 100644
--- a/components/script/dom/servoparser/html.rs
+++ b/components/script/dom/servoparser/html.rs
@@ -10,6 +10,7 @@ use crate::dom::bindings::root::{Dom, DomRoot};
 use crate::dom::bindings::trace::JSTraceable;
 use crate::dom::characterdata::CharacterData;
 use crate::dom::document::Document;
+use crate::dom::documentfragment::DocumentFragment;
 use crate::dom::documenttype::DocumentType;
 use crate::dom::element::Element;
 use crate::dom::htmlscriptelement::HTMLScriptElement;
@@ -166,7 +167,7 @@ fn rev_children_iter(n: &Node) -> impl Iterator<Item = DomRoot<Node>> {
 impl SerializationIterator {
     fn new(node: &Node, skip_first: bool) -> SerializationIterator {
         let mut ret = SerializationIterator { stack: vec![] };
-        if skip_first {
+        if skip_first || node.is::<DocumentFragment>() {
             for c in rev_children_iter(node) {
                 ret.push_node(&*c);
             }
diff --git a/tests/wpt/metadata/MANIFEST.json b/tests/wpt/metadata/MANIFEST.json
index 0681b77f4ec..1a6432ba30b 100644
--- a/tests/wpt/metadata/MANIFEST.json
+++ b/tests/wpt/metadata/MANIFEST.json
@@ -642452,7 +642452,7 @@
    "support"
   ],
   "domparsing/XMLSerializer-serializeToString.html": [
-   "cb8ed9372df5e05588cbd593c40a8c13ee868bec",
+   "23b9ce841f5046f180ce78d92d7ac1132712f999",
    "testharness"
   ],
   "domparsing/createContextualFragment.html": [
diff --git a/tests/wpt/web-platform-tests/domparsing/XMLSerializer-serializeToString.html b/tests/wpt/web-platform-tests/domparsing/XMLSerializer-serializeToString.html
index cb8ed9372df..23b9ce841f5 100644
--- a/tests/wpt/web-platform-tests/domparsing/XMLSerializer-serializeToString.html
+++ b/tests/wpt/web-platform-tests/domparsing/XMLSerializer-serializeToString.html
@@ -204,6 +204,14 @@ test(function() {
   assert_equals(serialize(root2), '<root xmlns:xl="http://www.w3.org/1999/xlink" xl:type="v"/>');
 }, 'Check if no special handling for XLink namespace unlike HTML serializer.');
 
+test(function() {
+  var root = new DocumentFragment;
+  root.append(document.createElement('div'));
+  root.append(document.createElement('span'));
+  assert_equals(serialize(root), '<div xmlns="http://www.w3.org/1999/xhtml"></div><span xmlns="http://www.w3.org/1999/xhtml"></span>');
+}, 'Check if document fragment serializes.');
+
+
 </script>
  </body>
 </html>