diff --git a/src/bin/pgbench/t/001_pgbench_with_server.pl b/src/bin/pgbench/t/001_pgbench_with_server.pl
index 3609b9b..1fe3433 100644
--- a/src/bin/pgbench/t/001_pgbench_with_server.pl
+++ b/src/bin/pgbench/t/001_pgbench_with_server.pl
@@ -463,7 +463,8 @@ pgbench(
 	'pgbench progress');
 
 # $nthreads threads, 2 seconds, sometimes only one aggregated line is written
-check_pgbench_logs('001_pgbench_log_1', $nthreads, 1, 2,
+# and sometimes 3 lines...
+check_pgbench_logs('001_pgbench_log_1', $nthreads, 1, 3,
 	qr{^\d+ \d{1,2} \d+ \d+ \d+ \d+ \d+ \d+ \d+ \d+ \d+$});
 
 # with sampling rate