diff --git a/reference/exif/functions/exif-thumbnail.xml b/reference/exif/functions/exif-thumbnail.xml
index 95c379af84..226cb68fcc 100644
--- a/reference/exif/functions/exif-thumbnail.xml
+++ b/reference/exif/functions/exif-thumbnail.xml
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="iso-8859-1"?>
-<!-- $Revision: 1.1 $ -->
+<!-- $Revision: 1.2 $ -->
 <!-- splitted from ./en/functions/image.xml, last change in rev 1.78 -->
  <refentry id="function.exif-thumbnail">
   <refnamediv>
@@ -12,7 +12,7 @@
     <type>string</type><methodname>exif_thumbnail</methodname>
      <methodparam><type>string</type><parameter>filename</parameter></methodparam>
      <methodparam choice="opt"><type>int</type><parameter>&amp;width</parameter></methodparam>
-     <methodparam choice="opt"><type>int</type><parameter>&amp;height</parameter></methodparam>
+     <methodparam><type>int</type><parameter>&amp;height</parameter></methodparam>
      <methodparam choice="opt"><type>int</type><parameter>&amp;imagetype</parameter></methodparam>
    </methodsynopsis>
    <para>