diff --git a/reference/curl/functions/curl-setopt.xml b/reference/curl/functions/curl-setopt.xml
index a706b40f88..6479d74ebe 100644
--- a/reference/curl/functions/curl-setopt.xml
+++ b/reference/curl/functions/curl-setopt.xml
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="iso-8859-1"?>
-<!-- $Revision: 1.39 $ -->
+<!-- $Revision: 1.40 $ -->
 <refentry xml:id="function.curl-setopt" xmlns="http://docbook.org/ns/docbook">
  <refnamediv>
   <refname>curl_setopt</refname>
@@ -849,6 +849,9 @@
             use the full path. This can either be passed as a urlencoded 
             string like '<literal>para1=val1&amp;para2=val2&amp;...</literal>' 
             or as an array with the field name as key and field data as value.
+            If <parameter>value</parameter> is an array, the
+            <literal>Content-Type</literal> header will be set to
+            <literal>multipart/form-data</literal>.
            </entry>
            <entry>
            </entry>