diff --git a/language/oop5/constants.xml b/language/oop5/constants.xml
index af033f51c4..c13cd50668 100644
--- a/language/oop5/constants.xml
+++ b/language/oop5/constants.xml
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="iso-8859-1"?>
-<!-- $Revision: 1.11 $ -->
+<!-- $Revision: 1.12 $ -->
  <sect1 xml:id="language.oop5.constants" xmlns="http://docbook.org/ns/docbook">
   <title>Class Constants</title>
   <para>
@@ -14,6 +14,8 @@
 
   <para>
    As of PHP 5.3.0, it's possible to reference the class using a variable.
+   Keywords like <literal>self</literal>, <literal>parent</literal> or 
+   <literal>static</literal> are not allowed in dynamic class references.
   </para>
 
   <example>
diff --git a/language/oop5/paamayim-nekudotayim.xml b/language/oop5/paamayim-nekudotayim.xml
index 9c7f711d93..38c57a887d 100644
--- a/language/oop5/paamayim-nekudotayim.xml
+++ b/language/oop5/paamayim-nekudotayim.xml
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="iso-8859-1"?>
-<!-- $Revision: 1.11 $ -->
+<!-- $Revision: 1.12 $ -->
  <sect1 xml:id="language.oop5.paamayim-nekudotayim" xmlns="http://docbook.org/ns/docbook">
   <title>Scope Resolution Operator (::)</title>
 
@@ -18,6 +18,8 @@
 
   <para>
    As of PHP 5.3.0, it's possible to reference the class using a variable.
+   Keywords like <literal>self</literal>, <literal>parent</literal> or 
+   <literal>static</literal> are not allowed in dynamic class references.
   </para>
 
   <para>
diff --git a/language/oop5/static.xml b/language/oop5/static.xml
index 8400906cab..b3680500a8 100644
--- a/language/oop5/static.xml
+++ b/language/oop5/static.xml
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="iso-8859-1"?>
-<!-- $Revision: 1.14 $ -->
+<!-- $Revision: 1.15 $ -->
  <sect1 xml:id="language.oop5.static" xmlns="http://docbook.org/ns/docbook">
   <title>Static Keyword</title>
 
@@ -33,7 +33,9 @@
   </para>
 
   <para>
-   As of PHP 5.3.0, it's possible to reference the class  using a variable.
+   As of PHP 5.3.0, it's possible to reference the class using a variable.
+   Keywords like <literal>self</literal>, <literal>parent</literal> or 
+   <literal>static</literal> are not allowed in dynamic class references.
   </para>
 
   <example>