diff --git a/doc/src/sgml/ref/create_trigger.sgml b/doc/src/sgml/ref/create_trigger.sgml
index 303881fcfb..7ef96c5650 100644
--- a/doc/src/sgml/ref/create_trigger.sgml
+++ b/doc/src/sgml/ref/create_trigger.sgml
@@ -454,7 +454,9 @@ UPDATE OF <replaceable>column_name1</replaceable> [, <replaceable>column_name2</
    row's contents by <literal>BEFORE UPDATE</literal> triggers are not considered.
    Conversely, a command such as <literal>UPDATE ... SET x = x ...</literal>
    will fire a trigger on column <literal>x</literal>, even though the column's
-   value did not change.
+   value did not change;  use function <link
+   linkend="functions-trigger"><function>suppress_redundant_updates_trigger</function></link>
+   in triggers to suppress non-change updates.
   </para>
 
   <para>