diff --git a/reference/memcached/book.xml b/reference/memcached/book.xml
index 05e219330b..0a4f3e581e 100644
--- a/reference/memcached/book.xml
+++ b/reference/memcached/book.xml
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<!-- $Revision: 1.3 $ -->
+<!-- $Revision: 1.4 $ -->
 
 <book xml:id="book.memcached" xmlns="http://docbook.org/ns/docbook" xmlns:xlink="http://www.w3.org/1999/xlink">
  <title>Memcached</title>
@@ -31,6 +31,7 @@
 
  &reference.memcached.setup;
  &reference.memcached.constants;
+ &reference.memcached.callbacks;
  &reference.memcached.examples;
  &reference.memcached.expiration;
  &reference.memcached.memcached;
diff --git a/reference/memcached/callbacks.xml b/reference/memcached/callbacks.xml
index b9a0e25d93..b4cf848f9b 100644
--- a/reference/memcached/callbacks.xml
+++ b/reference/memcached/callbacks.xml
@@ -1,9 +1,12 @@
 <?xml version="1.0" encoding="utf-8"?>
-<!-- $Revision: 1.1 $ -->
+<!-- $Revision: 1.2 $ -->
 
 <chapter xml:id="memcached.callbacks" xmlns="http://docbook.org/ns/docbook" xmlns:xlink="http://www.w3.org/1999/xlink">
  <title>Callbacks</title>
 
+ <section xml:id="memcached.callbacks.placeholder">
+  <para>Placeholder</para>
+ </section>
 </chapter>
 
 <!-- Keep this comment at the end of the file