lib/PublicInbox/LeiStore.pm | 2 +-

diff --git a/lib/PublicInbox/LeiStore.pm b/lib/PublicInbox/LeiStore.pm
index 52a1456fb41544e4bee7ad21c1a0f662bc59d13c..613d1d31f58136b53cd48533f7869e17522c5329 100644
--- a/lib/PublicInbox/LeiStore.pm
+++ b/lib/PublicInbox/LeiStore.pm
@@ -512,7 +512,7 @@ 	my $dir = $self->{priv_eidx}->{topdir};
 	return unless -e $dir;
 	my $old = delete $self->{-tmp_err};
 	my $pfx = POSIX::strftime('%Y%m%d%H%M%S', gmtime(time));
-	my $err = File::Temp->new(TEMPLATE => "$pfx.$$.lei_storeXXXX",
+	my $err = File::Temp->new(TEMPLATE => "$pfx.$$.err-XXXX",
 				SUFFIX => '.err', DIR => $dir);
 	open STDERR, '>>', $err->filename or die "dup2: $!";
 	STDERR->autoflush(1); # shared with shard subprocesses