lib/PublicInbox/Hval.pm | 2 +-
 t/hval.t                | 2 ++

diff --git a/lib/PublicInbox/Hval.pm b/lib/PublicInbox/Hval.pm
index 800508861bcdb28dc435d121d7d1074d6814f2fd..8d36fc2ba6a38189193360e0059647688346eabf 100644
--- a/lib/PublicInbox/Hval.pm
+++ b/lib/PublicInbox/Hval.pm
@@ -100,7 +100,7 @@ 		my ($addr, $domain) = ($1, $2);
 		if ($addrs->{$addr} || ((defined $re && $domain =~ $re))) {
 			$addr;
 		} else {
-			$addr =~ s!([^\.]+)\.!$1•!g;
+			$addr =~ s!([^\.]+)\.!$1•!;
 			$addr
 		}
 		/sge;
diff --git a/t/hval.t b/t/hval.t
index dcbd838240c42639a3a5984771508067b9aa8fe8..a3712666d617511a5fc8fcc2b376244fc38b1014 100644
--- a/t/hval.t
+++ b/t/hval.t
@@ -17,6 +17,7 @@ hello@example.comm
 hello@example.com
 meta@public-inbox.org
 test@public-inbox.org
+test@a.b.c.org
 EOF
 
 PublicInbox::Hval::obfuscate_addrs($ibx, $html);
@@ -26,6 +27,7 @@ hello@example•comm
 hello@example.com
 meta@public-inbox.org
 test@public-inbox•org
+test@a•b.c.org
 EOF
 
 is($html, $exp, 'only obfuscated relevant addresses');