diff --git a/reference/imap/functions/imap-fetchheader.xml b/reference/imap/functions/imap-fetchheader.xml
index 8bea2a84d3..578fda3c89 100644
--- a/reference/imap/functions/imap-fetchheader.xml
+++ b/reference/imap/functions/imap-fetchheader.xml
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="iso-8859-1"?>
-<!-- $Revision: 1.4 $ -->
+<!-- $Revision: 1.5 $ -->
 <!-- splitted from ./en/functions/imap.xml, last change in rev 1.2 -->
   <refentry id="function.imap-fetchheader">
    <refnamediv>
@@ -12,7 +12,7 @@
       <type>string</type><methodname>imap_fetchheader</methodname>
       <methodparam><type>resource</type><parameter>imap_stream</parameter></methodparam>
       <methodparam><type>int</type><parameter>msgno</parameter></methodparam>
-      <methodparam><type>int</type><parameter>options</parameter></methodparam>
+      <methodparam choice="opt"><type>int</type><parameter>options</parameter></methodparam>
      </methodsynopsis>
     <para>
      This function causes a fetch of the complete, unfiltered