diff --git a/appendices/migration5.xml b/appendices/migration5.xml
index 7aa99eabf6..519f234138 100755
--- a/appendices/migration5.xml
+++ b/appendices/migration5.xml
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="iso-8859-1"?>
-<!-- $Revision: 1.32 $ -->
+<!-- $Revision: 1.33 $ -->
  <appendix id="migration5">
   <title>Migrating from PHP 4 to PHP 5</title>
 
@@ -92,11 +92,19 @@
     </listitem>
     <listitem>
      <simpara>
-      <function>get_class</function> starting PHP 5 returns the name of the
-      class as it was declared which may lead to problems in older scripts
-      that rely on the previous behaviour (the class name was lowercased).
-      A possible solution is to search for <function>get_class</function> in
-      all your scripts and use <function>strtolower</function>.
+      <function>get_class</function> now returns the name of the class as it 
+      was declared (case-sensitive) which may lead to problems in older scripts
+      that rely on the previous behaviour (the class name was always returned
+      lowercased).  A possible solution is to search for 
+      <function>get_class</function> in all your scripts and use 
+      <function>strtolower</function>.
+     </simpara>
+     <simpara>
+      This case sensitivity change also applies to the 
+      <link linkend="language.constants.predefined">magical predefined 
+      constants</link> <constant>__CLASS__</constant>, 
+      <constant>__METHOD__</constant>, and <constant>__FUNCTION__</constant>.
+      The values are returned exactly as they're declared (case-sensitive).
      </simpara>
     </listitem>
     <listitem>