diff --git a/doc/src/sgml/ref/pgbench.sgml b/doc/src/sgml/ref/pgbench.sgml
index 7bd01a24ea..8f84effd3d 100644
--- a/doc/src/sgml/ref/pgbench.sgml
+++ b/doc/src/sgml/ref/pgbench.sgml
@@ -1592,7 +1592,8 @@ END;
    run by that session,
    <replaceable>time</replaceable> is the total elapsed transaction time in microseconds,
    <replaceable>script_no</replaceable> identifies which script file was used (useful when
-   multiple scripts were specified with <option>-f</option> or <option>-b</option>),
+   multiple scripts were specified with <option>-f</option> or <option>-b</option>)
+   starting from 0 (unlike the user-oriented final report on stdout which starts from 1),
    and <replaceable>time_epoch</replaceable>/<replaceable>time_us</replaceable> are a
    Unix-epoch time stamp and an offset
    in microseconds (suitable for creating an ISO 8601