diff --git a/reference/ldap/functions/ldap-exop.xml b/reference/ldap/functions/ldap-exop.xml
index 74a7d420d8..f2cf8748ab 100644
--- a/reference/ldap/functions/ldap-exop.xml
+++ b/reference/ldap/functions/ldap-exop.xml
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<!-- EN-Revision: 9faf0215daa7a2b5d84525d7d2b3d6b066cc85ec Maintainer: rjhdby Status: ready -->
+<!-- EN-Revision: 6400027855e1ef2a1a95f62db200fc1ae35a7b2e Maintainer: rjhdby Status: ready -->
 <!-- Reviewed: yes Maintainer: sergey -->
 <refentry xml:id="function.ldap-exop" xmlns="http://docbook.org/ns/docbook" xmlns:xlink="http://www.w3.org/1999/xlink">
  <refnamediv>
@@ -10,11 +10,11 @@
  <refsect1 role="description">
   &reftitle.description;
   <methodsynopsis>
-   <type>mixed</type><methodname>ldap_exop</methodname>
+   <type class="union"><type>LDAP\Result</type><type>bool</type></type><methodname>ldap_exop</methodname>
    <methodparam><type>LDAP\Connection</type><parameter>ldap</parameter></methodparam>
    <methodparam><type>string</type><parameter>request_oid</parameter></methodparam>
-   <methodparam choice="opt"><type>string</type><parameter>request_data</parameter><initializer>&null;</initializer></methodparam>
-   <methodparam choice="opt"><type>array</type><parameter>controls</parameter><initializer>&null;</initializer></methodparam>
+   <methodparam choice="opt"><type class="union"><type>string</type><type>null</type></type><parameter>request_data</parameter><initializer>&null;</initializer></methodparam>
+   <methodparam choice="opt"><type class="union"><type>array</type><type>null</type></type><parameter>controls</parameter><initializer>&null;</initializer></methodparam>
    <methodparam choice="opt"><type>string</type><parameter role="reference">response_data</parameter></methodparam>
    <methodparam choice="opt"><type>string</type><parameter role="reference">response_oid</parameter></methodparam>
   </methodsynopsis>