diff --git a/reference/misc/functions/constant.xml b/reference/misc/functions/constant.xml
index 56ffeca435..db30d6c5d7 100644
--- a/reference/misc/functions/constant.xml
+++ b/reference/misc/functions/constant.xml
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="iso-8859-1"?>
-<!-- $Revision: 1.4 $ -->
+<!-- $Revision: 1.5 $ -->
 <!-- splitted from ./en/functions/misc.xml, last change in rev 1.38 -->
   <refentry id="function.constant">
    <refnamediv>
@@ -18,9 +18,13 @@
     </simpara>
     <simpara>
      <function>constant</function> is useful if you need to retrieve
-     the value of a constant, but do not know its name.  i.e. It is
+     the value of a constant, but do not know its name.  I.e. it is
      stored in a variable or returned by a function.
     </simpara>
+    <simpara>
+     This function works also with <link
+     linkend="language.oop5.constants">class constants</link>.
+    </simpara>
     <para>
      <example>
       <title><function>constant</function> example</title>