diff --git a/src/bin/pg_ctl/t/001_start_stop.pl b/src/bin/pg_ctl/t/001_start_stop.pl
index 50a57d0..0c57e9c 100644
--- a/src/bin/pg_ctl/t/001_start_stop.pl
+++ b/src/bin/pg_ctl/t/001_start_stop.pl
@@ -33,6 +33,8 @@ else
 {
 	print $conf "listen_addresses = '127.0.0.1'\n";
 }
+print $conf TestLib::slurp_file($ENV{TEMP_CONFIG})
+  if defined $ENV{TEMP_CONFIG};
 close $conf;
 my $ctlcmd = [
 	'pg_ctl', 'start', '-D', "$tempdir/data", '-l',
diff --git a/src/test/perl/PostgresNode.pm b/src/test/perl/PostgresNode.pm
index 8a2c6fc..ce663a1 100644
--- a/src/test/perl/PostgresNode.pm
+++ b/src/test/perl/PostgresNode.pm
@@ -482,6 +482,9 @@ sub init
 		print $conf "unix_socket_directories = '$host'\n";
 		print $conf "listen_addresses = ''\n";
 	}
+
+	print $conf TestLib::slurp_file($ENV{TEMP_CONFIG})
+	  if defined $ENV{TEMP_CONFIG};
 	close $conf;
 
 	chmod($self->group_access ? 0640 : 0600, "$pgdata/postgresql.conf")