diff --git a/reference/mysqli/functions/mysqli-rpl-query-type.xml b/reference/mysqli/functions/mysqli-rpl-query-type.xml
index 14369d63db..4f2c5236d3 100644
--- a/reference/mysqli/functions/mysqli-rpl-query-type.xml
+++ b/reference/mysqli/functions/mysqli-rpl-query-type.xml
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="iso-8859-1"?>
-<!-- $Revision: 1.7 $ -->
+<!-- $Revision: 1.8 $ -->
   <refentry id="function.mysqli-rpl-query-type">
    <refnamediv>
     <refname>mysqli_rpl_query_type</refname>
@@ -23,6 +23,16 @@
      </methodsynopsis>
     </classsynopsis>
 
+    <para>
+     Returns <constant>MYSQLI_RPL_MASTER</constant>,
+     <constant>MYSQLI_RPL_SLAVE</constant> or
+     <constant>MYSQLI_RPL_ADMIN</constant> depending on a query type.
+     <literal>INSERT</literal>, <literal>UPDATE</literal> and similar are
+     <emphasis>master</emphasis> queries, <literal>SELECT</literal> is
+     <emphasis>slave</emphasis>, and <literal>FLUSH</literal>,
+     <literal>REPAIR</literal> and similar are <emphasis>admin</emphasis>.
+    </para>
+
     &warn.experimental.func;
 
    </refsect1>