diff --git a/src/test/modules/test_autovacuum/t/001_parallel_autovacuum.pl b/src/test/modules/test_autovacuum/t/001_parallel_autovacuum.pl
index 7312ae3dd4a..33b50c13f7c 100644
--- a/src/test/modules/test_autovacuum/t/001_parallel_autovacuum.pl
+++ b/src/test/modules/test_autovacuum/t/001_parallel_autovacuum.pl
@@ -28,7 +28,8 @@ sub prepare_for_next_test
 }
 
 my $node = PostgreSQL::Test::Cluster->new('main');
-$node->init;
+
+$node->init('auth_extra' => [ '--create-role', 'regress_dbowner' ]);
 
 # Limit to one autovacuum worker and disable autovacuum logging globally
 # (enabled only on the test table) so that log checks below match only