diff --git a/reference/mysqli/mysqli_warning/next.xml b/reference/mysqli/mysqli_warning/next.xml
index 9fc40d0b3c..60d6d4d1e0 100644
--- a/reference/mysqli/mysqli_warning/next.xml
+++ b/reference/mysqli/mysqli_warning/next.xml
@@ -4,20 +4,23 @@
 <refentry xml:id="mysqli-warning.next" xmlns="http://docbook.org/ns/docbook" xmlns:xlink="http://www.w3.org/1999/xlink">
  <refnamediv>
   <refname>mysqli_warning::next</refname>
-  <refpurpose>The next purpose</refpurpose>
+  <refpurpose>Fetch next warning</refpurpose>
  </refnamediv>
 
  <refsect1 role="description">
   &reftitle.description;
   <methodsynopsis role="oop">
-   <modifier>public</modifier> <type>void</type><methodname>mysqli_warning::next</methodname>
+   <modifier>public</modifier> <type>bool</type><methodname>mysqli_warning::next</methodname>
    <void />
   </methodsynopsis>
   <para>
-
+   Change warning information to the next warning if possible.
+  </para>
+  <para>
+   Once the warning has been set to the next warning, new values of properties <literal>message</literal>,
+   <literal>sqlstate</literal> and <literal>errno</literal> of <classname>mysqli_warning</classname>
+   are available.
   </para>
-
-  &warn.undocumented.func;
 
  </refsect1>
 
@@ -29,7 +32,8 @@
  <refsect1 role="returnvalues">
   &reftitle.returnvalues;
   <para>
-
+   Returns &true; if next warning was fetched successfully.
+   If there are no more warnings, it will return &false;
   </para>
  </refsect1>