diff --git a/src/bin/pg_basebackup/t/010_pg_basebackup.pl b/src/bin/pg_basebackup/t/010_pg_basebackup.pl
index 1d3c498..4529747 100644
--- a/src/bin/pg_basebackup/t/010_pg_basebackup.pl
+++ b/src/bin/pg_basebackup/t/010_pg_basebackup.pl
@@ -268,7 +268,7 @@ $node->command_ok(
 $lsn = $node->safe_psql('postgres',
 	q{SELECT restart_lsn FROM pg_replication_slots WHERE slot_name = 'slot1'}
 );
-like($lsn, qr!^0/[0-9A-Z]{7,8}$!, 'restart LSN of slot has advanced');
+like($lsn, qr!^[0-9]/[0-9A-Z]{7,8}$!, 'restart LSN of slot has advanced');
 
 $node->command_ok(
 	[   'pg_basebackup', '-D', "$tempdir/backupxs_sl_R", '-X',