diff --git a/reference/spl/arrayobject/construct.xml b/reference/spl/arrayobject/construct.xml
index 733518471d..2055ee1727 100644
--- a/reference/spl/arrayobject/construct.xml
+++ b/reference/spl/arrayobject/construct.xml
@@ -10,7 +10,7 @@
   &reftitle.description;
   <constructorsynopsis>
    <modifier>public</modifier> <methodname>ArrayObject::__construct</methodname>
-   <methodparam choice="opt"><type>mixed</type><parameter>input</parameter></methodparam>
+   <methodparam choice="opt"><type>mixed</type><parameter>input</parameter><initializer>[]</initializer></methodparam>
    <methodparam choice="opt"><type>int</type><parameter>flags</parameter><initializer>0</initializer></methodparam>
    <methodparam choice="opt"><type>string</type><parameter>iterator_class</parameter><initializer>"ArrayIterator"</initializer></methodparam>
   </constructorsynopsis>