diff --git a/doc/src/sgml/pgbench.sgml b/doc/src/sgml/pgbench.sgml
index ed12e27..22ac371 100644
--- a/doc/src/sgml/pgbench.sgml
+++ b/doc/src/sgml/pgbench.sgml
@@ -769,7 +769,7 @@ pgbench <optional> <replaceable>options</> </optional> <replaceable>dbname</>
       Examples:
 <programlisting>
 \set ntellers 10 * :scale
-\set aid (1021 * :aid) % (100000 * :scale) + 1
+\set aid (1021 * :ntellers) % (100000 * :scale) + 1
 </programlisting></para>
     </listitem>
    </varlistentry>