t/lei-mirror.t | 1 +

diff --git a/t/lei-mirror.t b/t/lei-mirror.t
index b449e0b48a41eb8358c25bb047327c88acd177aa..294eb6542b2e6e50ed941553fa1e3650b72a9b02 100644
--- a/t/lei-mirror.t
+++ b/t/lei-mirror.t
@@ -167,6 +167,7 @@ 	ok(unlink("$d/t1/manifest.js.gz"), 'manifest created');
 	my $after = [ glob("$d/t1/*") ];
 	is_deeply($before, $after, 'no new files created');
 
+	local $ENV{HOME} = $tmpdir;
 	ok(run_script([qw(-index -Lbasic), "$d/t1"]), 'index v1');
 	ok(run_script([qw(-index -Lbasic), "$d/t2"]), 'index v2');
 	my $f = "$d/t1/public-inbox/msgmap.sqlite3";