diff --git a/doc/src/sgml/backup.sgml b/doc/src/sgml/backup.sgml
index 4eb48b04761..df9cc29c520 100644
--- a/doc/src/sgml/backup.sgml
+++ b/doc/src/sgml/backup.sgml
@@ -1335,7 +1335,7 @@ tar -rf /var/lib/pgsql/backup.tar /var/lib/pgsql/archive/
       <varname>archive_command</varname>, so that their
       <filename>postgresql.conf</> entry looks very simple:
 <programlisting>
-archive_command = 'local_backup_script.sh'
+archive_command = 'local_backup_script.sh "%p" "%f"'
 </programlisting>
       Using a separate script file is advisable any time you want to use
       more than a single command in the archiving process.