lib/PublicInbox/Spawn.pm | 8 +-------
 t/spawn.t                | 3 ++-

diff --git a/lib/PublicInbox/Spawn.pm b/lib/PublicInbox/Spawn.pm
index fd9816082188dc8265bdad89a1449e5e9cbe73ee..7b0f3bdde6637f356e14be70790b77914c44a060 100644
--- a/lib/PublicInbox/Spawn.pm
+++ b/lib/PublicInbox/Spawn.pm
@@ -205,18 +205,12 @@ 	my $rlim = [];
 
 	foreach my $l (RLIMITS()) {
 		defined(my $v = $opts->{$l}) or next;
-		my ($soft, $hard);
-		if (ref($v)) {
-			($soft, $hard) = @$v;
-		} else {
-			$soft = $hard = $v;
-		}
 		my $r = eval "require BSD::Resource; BSD::Resource::$l();";
 		unless (defined $r) {
 			warn "$l undefined by BSD::Resource: $@\n";
 			next;
 		}
-		push @$rlim, $r, $soft, $hard;
+		push @$rlim, $r, @$v;
 	}
 	my $pid = pi_fork_exec($in, $out, $err, $f, $cmd, \@env, $rlim);
 	$pid < 0 ? undef : $pid;
diff --git a/t/spawn.t b/t/spawn.t
index 5abedc96b727b186a6bd1998b4cdec980ae24795..884042824265b59717d4ca1bc9a6096f50f0807a 100644
--- a/t/spawn.t
+++ b/t/spawn.t
@@ -100,7 +100,8 @@ 	} or skip 'BSD::Resource::RLIMIT_CPU missing', 3;
 	my ($r, $w);
 	pipe($r, $w) or die "pipe: $!";
 	my $cmd = ['sh', '-c', 'while true; do :; done'];
-	my $opt = { RLIMIT_CPU => [ 1, 1 ], RLIMIT_CORE => 0, 1 => fileno($w) };
+	my $fd = fileno($w);
+	my $opt = { RLIMIT_CPU => [ 1, 1 ], RLIMIT_CORE => [ 0, 0 ], 1 => $fd };
 	my $pid = spawn($cmd, undef, $opt);
 	close $w or die "close(w): $!";
 	my $rset = '';