diff --git a/src/reference/docbook/index.xml b/src/reference/docbook/index.xml
index 2320bd966f..698c8e1e2d 100644
--- a/src/reference/docbook/index.xml
+++ b/src/reference/docbook/index.xml
@@ -165,17 +165,17 @@
 	  <xi:include href="./xml.xml"/>
 	  <xi:include href="./xmpp.xml"/>
   </part>
-  <part id="spring-integration-appendices">
-    <title>Appendices</title>
-    <partintro id="spring-integration-adapters">
-    	 <para>Advanced Topics and Additional Resources</para>
-    </partintro>
-      <xi:include href="./message-publishing.xml"/>
-      <xi:include href="./transactions.xml"/>
-	  <xi:include href="./security.xml"/>
-	  <xi:include href="./samples.xml"/>
-	  <xi:include href="./configuration.xml"/>
-	  <xi:include href="./resources.xml"/>
-	  <xi:include href="./history.xml"/>
-  </part>
+	<part id="spring-integration-appendices">
+		<title>Appendices</title>
+		<partintro id="spring-integration-adapters">
+			<para>Advanced Topics and Additional Resources</para>
+		</partintro>
+		<xi:include href="./message-publishing.xml"/>
+		<xi:include href="./transactions.xml"/>
+		<xi:include href="./security.xml"/>
+		<xi:include href="./samples.xml"/>
+		<xi:include href="./configuration.xml"/>
+		<xi:include href="./resources.xml"/>
+		<xi:include href="./history.xml"/>
+	</part>
 </book>
diff --git a/src/reference/docbook/message-publishing.xml b/src/reference/docbook/message-publishing.xml
index a0a2c2970d..9bb7a80689 100644
--- a/src/reference/docbook/message-publishing.xml
+++ b/src/reference/docbook/message-publishing.xml
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<chapter xmlns="http://docbook.org/ns/docbook" version="5.0" xml:id="message-publishing"
+<appendix> xmlns="http://docbook.org/ns/docbook" version="5.0" xml:id="message-publishing"
     xmlns:xlink="http://www.w3.org/1999/xlink">
   <title>Message Publishing</title>
   <para>
@@ -30,7 +30,7 @@
         <emphasis>Message</emphasis> it will publish.
         </para>
 
-        <para>	
+        <para>
        The <classname>PublisherAnnotationAdvisor</classname> defines and binds the following variables:
        <itemizedlist>
             <listitem>
@@ -381,4 +381,4 @@ static class BankingOperationsImpl implements BankingOperations {
        </para>
     </section>
   </section>
-</chapter>
+</appendix>
diff --git a/src/reference/docbook/security.xml b/src/reference/docbook/security.xml
index 90d7f9915a..1607658748 100644
--- a/src/reference/docbook/security.xml
+++ b/src/reference/docbook/security.xml
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<chapter xmlns="http://docbook.org/ns/docbook" version="5.0" xml:id="security"
+<appendix xmlns="http://docbook.org/ns/docbook" version="5.0" xml:id="security"
     xmlns:xlink="http://www.w3.org/1999/xlink">
   <title>Security in Spring Integration</title>
 
@@ -61,4 +61,4 @@
   </section>
 
 
-</chapter>
+</appendix>
diff --git a/src/reference/docbook/transactions.xml b/src/reference/docbook/transactions.xml
index 9cd93f6dff..fde979ddef 100644
--- a/src/reference/docbook/transactions.xml
+++ b/src/reference/docbook/transactions.xml
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<chapter xmlns="http://docbook.org/ns/docbook" version="5.0" xml:id="transactions"
+<appendix xmlns="http://docbook.org/ns/docbook" version="5.0" xml:id="transactions"
     xmlns:xlink="http://www.w3.org/1999/xlink">
   <title>Transaction Support</title>
 
@@ -203,7 +203,7 @@ public interface TransactionSynchronizationProcessor {
 	void processAfterRollback(IntegrationResourceHolder holder);
 
 }]]></programlisting>
-        
+
         The factory is responsible for creating a
         <ulink url="http://static.springsource.org/spring-framework/docs/3.1.2.RELEASE/javadoc-api/org/springframework/transaction/support/TransactionSynchronization.html">TransactionSynchronization</ulink>
         object. You can implement your own, or use the one provided by the framework:
@@ -288,4 +288,4 @@ public interface TransactionSynchronizationProcessor {
       </para>
       <programlisting><![CDATA[<bean id="transactionManager" class="org.springframework.integration.transaction.PseudoTransactionManager" />]]></programlisting>
     </section>
-</chapter>
+</appendix>