diff --git a/reference/array/functions/array-unique.xml b/reference/array/functions/array-unique.xml
index 8cc6e2f341..90fa60f1f2 100644
--- a/reference/array/functions/array-unique.xml
+++ b/reference/array/functions/array-unique.xml
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="iso-8859-1"?>
-<!-- $Revision: 1.19 $ -->
+<!-- $Revision: 1.20 $ -->
 <refentry xml:id="function.array-unique" xmlns="http://docbook.org/ns/docbook">
  <refnamediv>
   <refname>array_unique</refname>
@@ -11,7 +11,7 @@
   <methodsynopsis>
    <type>array</type><methodname>array_unique</methodname>
    <methodparam><type>array</type><parameter>array</parameter></methodparam>
-   <methodparam choice="opt"><type>int</type><parameter>sort_flags</parameter><initializer>SORT_REGULAR</initializer></methodparam>
+   <methodparam choice="opt"><type>int</type><parameter>sort_flags</parameter><initializer>SORT_STRING</initializer></methodparam>
   </methodsynopsis>
   <para>
    Takes an input <parameter>array</parameter> and returns a new array