diff --git a/doc/src/sgml/datatype.sgml b/doc/src/sgml/datatype.sgml
index 2c2a6333adf..35f371ccca9 100644
--- a/doc/src/sgml/datatype.sgml
+++ b/doc/src/sgml/datatype.sgml
@@ -1395,7 +1395,12 @@ SELECT b, char_length(b) FROM test2;
    <para>
     Example:
 <programlisting>
-SELECT '\xDEADBEEF';
+SET bytea_output = 'hex';
+
+SELECT '\xDEADBEEF'::bytea;
+   bytea
+------------
+ \xdeadbeef
 </programlisting>
    </para>
   </sect2>