diff --git a/appendices/migration54.xml b/appendices/migration54.xml
index fa7cc75e78..744f26dcbb 100644
--- a/appendices/migration54.xml
+++ b/appendices/migration54.xml
@@ -18,18 +18,18 @@
   <!-- Placehold for "What has changed in PHP 5.4.x". -->
 
   <!-- Current content for the 5.3.x changes
-  
+
    Most improvements in PHP 5.3.x have no impact on existing code.  There are
    a <link linkend="migration53.incompatible">few incompatibilities</link>
-   and <link linkend="migration53.new-features">new features</link> that should 
+   and <link linkend="migration53.new-features">new features</link> that should
    be considered, and code should be tested before switching PHP
    versions in production environments.
-   
+
    -->
   </simpara>
   <warning>
    <simpara>
-    This list is incomplete and is undergoing constant changes until PHP 5.4 is 
+    This list is incomplete and is undergoing constant changes until PHP 5.4 is
     is about to be released.
    </simpara>
   </warning>
@@ -567,7 +567,7 @@
   <itemizedlist>
    <listitem>
     <simpara>
-     <function>XsltProcessor::setSecurityPrefs</function> and 
+     <function>XsltProcessor::setSecurityPrefs</function> and
      <function>XsltProcessor::getSecurityPrefs</function>
     </simpara>
    </listitem>
@@ -755,7 +755,12 @@
   <itemizedlist>
    <listitem>
     <simpara>
-     <classname>SessionHandler</classname> interface
+     <classname>SessionHandler</classname> class.
+    </simpara>
+   </listitem>
+   <listitem>
+    <simpara>
+     <classname>SessionHandlerInterface</classname> interface.
     </simpara>
    </listitem>
   </itemizedlist>
@@ -888,7 +893,7 @@
     </simpara>
    </listitem>
   </itemizedlist>
-  
+
    <simpara><link linkend="book.curl">Curl</link>:</simpara>
   <itemizedlist>
    <listitem>
@@ -902,7 +907,7 @@
     </simpara>
    </listitem>
    </itemizedlist>
-   
+
   <simpara><link linkend="book.libxml">LibXML</link>:</simpara>
   <itemizedlist>
    <listitem>
@@ -921,7 +926,7 @@
     </simpara>
    </listitem>
    </itemizedlist>
-   
+
    <simpara><link linkend="book.openssl">OpenSSL</link>:</simpara>
   <itemizedlist>
    <listitem>
@@ -950,7 +955,7 @@
     </simpara>
    </listitem>
    </itemizedlist>
-   
+
   <simpara><link linkend="book.outcontrol">Output buffering</link>:</simpara>
   <itemizedlist>
    <listitem>
@@ -1004,7 +1009,7 @@
     </simpara>
    </listitem>
    </itemizedlist>
-  
+
    <simpara><link linkend="book.session">Sessions</link>:</simpara>
   <itemizedlist>
    <listitem>
@@ -1023,7 +1028,7 @@
     </simpara>
    </listitem>
    </itemizedlist>
-   
+
    <simpara><link linkend="book.stream">Streams</link>:</simpara>
   <itemizedlist>
    <listitem>
@@ -1057,7 +1062,7 @@
     </simpara>
    </listitem>
    </itemizedlist>
-   
+
    <simpara><link linkend="book.zlib">Zlib</link>:</simpara>
   <itemizedlist>
    <listitem>
@@ -1076,7 +1081,7 @@
     </simpara>
    </listitem>
   </itemizedlist>
-  
+
   <simpara><link linkend="book.intl">Intl</link>:</simpara>
   <itemizedlist>
    <listitem>
@@ -1180,7 +1185,7 @@
     </simpara>
    </listitem>
   </itemizedlist>
-  
+
   <simpara><link linkend="book.json">Json</link>:</simpara>
   <itemizedlist>
    <listitem>
@@ -1283,7 +1288,7 @@
     <simpara>
      <literal>session.upload_progress.enabled</literal>, <literal>session.upload_progress.cleanup</literal>,
      <literal>session.upload_progress.prefix</literal>, <literal>session.upload_progress.name</literal>,
-     <literal>session.upload_progress.freq</literal>, <literal>session.upload_progress.min_freq</literal>     
+     <literal>session.upload_progress.freq</literal>, <literal>session.upload_progress.min_freq</literal>
     </simpara>
    </listitem>
    <listitem>
@@ -1373,7 +1378,7 @@
    </listitem>
    <listitem>
     <simpara>
-     <link linkend="language.variables.superglobals">$_SERVER['REQUEST_TIME_FLOAT']</link> 
+     <link linkend="language.variables.superglobals">$_SERVER['REQUEST_TIME_FLOAT']</link>
      has been added to include microsecond precision.
     </simpara>
    </listitem>