lib/PublicInbox/LeiToMail.pm | 1 +
 t/lei-q-save.t               | 2 ++

diff --git a/lib/PublicInbox/LeiToMail.pm b/lib/PublicInbox/LeiToMail.pm
index 01f083844d136954b86efe48ddab689c5e953c9d..dbf58df9a21a2fcef96adafba6931810f4f63f12 100644
--- a/lib/PublicInbox/LeiToMail.pm
+++ b/lib/PublicInbox/LeiToMail.pm
@@ -361,6 +361,7 @@ 		my ($bref, $smsg, $eml) = @_;
 		$eml //= PublicInbox::Eml->new($bref);
 		return if $dedupe && $dedupe->is_dup($eml, $smsg);
 		$lei->{v2w}->ipc_do('add', $eml); # V2Writable->add
+		++$lei->{-nr_write};
 	}
 }
 
diff --git a/t/lei-q-save.t b/t/lei-q-save.t
index 7aa9b84eb3d704d067410cf5a74f52641c34a9e7..743a7b70e5185a0ea0d88fe83d125bb2bd9a4138 100644
--- a/t/lei-q-save.t
+++ b/t/lei-q-save.t
@@ -179,6 +179,8 @@ 	my $v2 = "$home/v2"; # v2: as an output destination
 	my (@before, @after);
 	require PublicInbox::MboxReader;
 	lei_ok(qw(q z:0.. -o), "v2:$v2");
+	like($lei_err, qr/^# ([1-9][0-9]*) written to \Q$v2\E/sm,
+		'non-zero write output to stderr');
 	lei_ok(qw(q z:0.. -o), "mboxrd:$home/before", '--only', $v2, '-j1,1');
 	open my $fh, '<', "$home/before";
 	PublicInbox::MboxReader->mboxrd($fh, sub { push @before, $_[0] });