lib/PublicInbox/View.pm | 5 ++++-

diff --git a/lib/PublicInbox/View.pm b/lib/PublicInbox/View.pm
index 07023e814516c40862ed32b0c2c86ebe7ba5f4db..ccdcde2a42df8515b3d2a2f69a643ea8c012b93b 100644
--- a/lib/PublicInbox/View.pm
+++ b/lib/PublicInbox/View.pm
@@ -823,7 +823,10 @@ 		my $mid = mid_clean($x->header('Message-ID'));
 
 		my $u = $x->header('X-PI-From');
 		my $ts = $x->header('X-PI-TS');
-		$state->{latest}->{$topic} = [ $mid, $u, $ts ];
+		my $exist = $state->{latest}->{$topic};
+		if (!$exist || $exist->[2] < $ts) {
+			$state->{latest}->{$topic} = [ $mid, $u, $ts ];
+		}
 	} else {
 		# ghost message, do not bump level
 		$child_adjust = 0;