diff --git a/language/constants.xml b/language/constants.xml
index 61bc59dc7e..cd24f77bfd 100644
--- a/language/constants.xml
+++ b/language/constants.xml
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="iso-8859-1"?>
-<!-- $Revision: 1.53 $ -->
+<!-- $Revision: 1.54 $ -->
  <chapter xml:id="language.constants" xmlns="http://docbook.org/ns/docbook">
   <title>Constants</title>
 
@@ -70,8 +70,9 @@ define("__FOO__", "something");
    <simpara>
     Only scalar data (<type>boolean</type>, <type>integer</type>, 
     <type>float</type> and <type>string</type>) can be contained 
-    in constants.
-    Do not define <type>resource</type> constants.
+    in constants. Its possible to register constants as 
+    <type>resource</type>, but it should be avoided, as it can cause 
+    unexpected results.
    </simpara>
    <simpara>
     You can get the value of a constant by simply specifying its name.