lib/PublicInbox/SearchView.pm | 2 +-

diff --git a/lib/PublicInbox/SearchView.pm b/lib/PublicInbox/SearchView.pm
index 8e33079f1f5d1e100e91aef0242779c764f1f1ab..07fef40ccccc42b34f46da8c83add5bbf1d79a72 100644
--- a/lib/PublicInbox/SearchView.pm
+++ b/lib/PublicInbox/SearchView.pm
@@ -34,7 +34,7 @@ 	my $srch = $ctx->{ibx}->isrch or
 		return PublicInbox::WWW::need($ctx, 'Search');
 	my $q = PublicInbox::SearchQuery->new($ctx->{qp});
 	my $x = $q->{x};
-	my $o = $q->{o};
+	my $o = $q->{o} // 0;
 	my $asc;
 	if ($o < 0) {
 		$asc = 1;