diff --git a/reference/misc/functions/php-strip-whitespace.xml b/reference/misc/functions/php-strip-whitespace.xml
index e2b95cf3a2..5d44e1d293 100644
--- a/reference/misc/functions/php-strip-whitespace.xml
+++ b/reference/misc/functions/php-strip-whitespace.xml
@@ -1,5 +1,5 @@
 <?xml version='1.0' encoding='iso-8859-1'?>
-<!-- $Revision: 1.2 $ -->
+<!-- $Revision: 1.3 $ -->
 <refentry id="function.php-strip-whitespace">
  <refnamediv>
   <refname>php_strip_whitespace</refname>
@@ -18,6 +18,14 @@
    PHP comments and whitespace removed. This may be useful for determining the
    amount of actual code in your scripts compared with the amount of comments.
   </para>
+  <note>
+   <para>
+    This function works as described as of PHP 5.0.1. Before this it would
+    only return an empty string. For more information on this bug and its
+    prior behavior, see bug report
+    <ulink url="&url.php.bugs;29606">#29606</ulink>.
+   </para>
+  </note>
  </refsect1>
  <refsect1>
   &reftitle.returnvalues;