t/check-www-inbox.perl | 2 +-

diff --git a/t/check-www-inbox.perl b/t/check-www-inbox.perl
index 933362a75ab4e07a9316a94ffa0a0437ff6244c8..0a6d61bb5997a2fafbb19ef2dfd56386d3f103c3 100644
--- a/t/check-www-inbox.perl
+++ b/t/check-www-inbox.perl
@@ -175,7 +175,7 @@
 		my $s;
 		# blocking
 		foreach my $l (@links, "DONE\t$u") {
-			next if $l eq '';
+			next if $l eq '' || $l =~ /\.mbox(?:\.gz)\z/;
 			do {
 				$s = $done_wr->send($l, MSG_EOR);
 			} while (!defined $s && $!{EINTR});