diff --git a/manual.xml b/manual.xml
index 650cbea69c..1a2b6fc947 100644
--- a/manual.xml
+++ b/manual.xml
@@ -346,6 +346,7 @@
   <set xml:id="refs.utilspec.server">
    <title>&ServerSpecificExtensions;</title>
    &reference.apache.book;
+   &reference.litespeed.book;
    &reference.fpm.book;
   </set>