diff --git a/style/properties/longhands/font.mako.rs b/style/properties/longhands/font.mako.rs
index 19eda566d..100e0f8cb 100644
--- a/style/properties/longhands/font.mako.rs
+++ b/style/properties/longhands/font.mako.rs
@@ -289,7 +289,7 @@ ${helpers.predefined_type(
 ${helpers.predefined_type(
     "-x-lang",
     "XLang",
-    engines="gecko",
+    engines="gecko servo",
     initial_value="computed::XLang::get_initial_value()",
     animation_value_type="none",
     enabled_in="",
diff --git a/style/values/specified/font.rs b/style/values/specified/font.rs
index 938e6aaf3..a9461dffe 100644
--- a/style/values/specified/font.rs
+++ b/style/values/specified/font.rs
@@ -1714,6 +1714,7 @@ impl XTextScale {
     ToResolvedValue,
     ToShmem,
 )]
+#[cfg_attr(feature = "servo", derive(Deserialize, Serialize))]
 /// Internal property that reflects the lang attribute
 pub struct XLang(#[css(skip)] pub Atom);