diff --git a/reference/mysqli/mysqli_warning.xml b/reference/mysqli/mysqli_warning.xml
index 81cbb5a6ad..2d39a98844 100644
--- a/reference/mysqli/mysqli_warning.xml
+++ b/reference/mysqli/mysqli_warning.xml
@@ -25,6 +25,7 @@
 <!-- {{{ Class synopsis -->
     <classsynopsisinfo>
      <ooclass>
+      <modifier>final</modifier>
       <classname>mysqli_warning</classname>
      </ooclass>
     </classsynopsisinfo>