lib/PublicInbox/LeiOverview.pm | 2 +-

diff --git a/lib/PublicInbox/LeiOverview.pm b/lib/PublicInbox/LeiOverview.pm
index 2d3db9f4ab929ac3154b19bced22f0bbf0288350..066c40bd94eafdb4de8e37270b4a442f5f55e239 100644
--- a/lib/PublicInbox/LeiOverview.pm
+++ b/lib/PublicInbox/LeiOverview.pm
@@ -143,7 +143,7 @@ 	$smsg->{rt} = iso8601(delete $smsg->{ts}); # JMAP receivedAt
 	$smsg->{dt} = iso8601(delete $smsg->{ds}); # JMAP UTCDate
 	$smsg->{pct} = get_pct($mitem) if $mitem;
 	if (my $r = delete $smsg->{references}) {
-		$smsg->{refs} = [ map { $_ } ($r =~ m/$MID_EXTRACT/go) ];
+		@{$smsg->{refs}} = ($r =~ m/$MID_EXTRACT/go);
 	}
 	if (my $m = delete($smsg->{mid})) {
 		$smsg->{'m'} = $m;