diff --git a/reference/zip/functions/ziparchive-open.xml b/reference/zip/functions/ziparchive-open.xml
index 1c7b314491..2751e6de03 100644
--- a/reference/zip/functions/ziparchive-open.xml
+++ b/reference/zip/functions/ziparchive-open.xml
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="iso-8859-1"?>
-<!-- $Revision: 1.2 $ -->
+<!-- $Revision: 1.3 $ -->
 <refentry id="function.ziparchive-open">
  <refnamediv>
   <refname>ZipArchive::open</refname>
@@ -34,6 +34,11 @@
       <para>
        The mode to use to open the archive.
        <itemizedlist>
+        <listitem>
+         <para>
+          <constant>ZIPARCHIVE::OVERWRITE</constant>
+         </para>
+        </listitem>
         <listitem>
          <para>
           <constant>ZIPARCHIVE::CREATE</constant>