diff --git a/reference/mysqli/book.xml b/reference/mysqli/book.xml
index ee26377698..f8e39e435b 100644
--- a/reference/mysqli/book.xml
+++ b/reference/mysqli/book.xml
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<!-- $Revision: 1.5 $ -->
+<!-- $Revision: 1.6 $ -->
 <!-- Purpose: database.vendors -->
 <!-- Membership: bundled, external -->
 <book xml:id="book.mysqli" xmlns="http://docbook.org/ns/docbook" xmlns:xlink="http://www.w3.org/1999/xlink">
@@ -54,6 +54,7 @@
  &reference.mysqli.overview;
  &reference.mysqli.mysqlnd;
  &reference.mysqli.setup;
+ &reference.mysqli.persistconns;
  &reference.mysqli.constants;
  &reference.mysqli.summary;
  &reference.mysqli.mysqli;