lib/PublicInbox/IPC.pm      | 1 +
 lib/PublicInbox/LEI.pm      | 8 ++++----
 lib/PublicInbox/LeiStore.pm | 2 +-

diff --git a/lib/PublicInbox/IPC.pm b/lib/PublicInbox/IPC.pm
index 1fa67d00e704baff9b769a12ab25487a9cf1d774..cf3723f764b9f3c84b33a8bdf2993a117ec75e63 100644
--- a/lib/PublicInbox/IPC.pm
+++ b/lib/PublicInbox/IPC.pm
@@ -177,6 +177,7 @@ # use this if we have multiple readers reading curl or "pigz -dc"
 # and writing to the same store
 sub ipc_lock_init {
 	my ($self, $f) = @_;
+	$f // die 'BUG: no filename given';
 	require PublicInbox::Lock;
 	$self->{-ipc_lock} //= bless { lock_path => $f }, 'PublicInbox::Lock'
 }
diff --git a/lib/PublicInbox/LEI.pm b/lib/PublicInbox/LEI.pm
index a0986f386a165de5690ded33bca4c3042df51898..d20ba7448663ddf6a28e18625245264bd5d9c94b 100644
--- a/lib/PublicInbox/LEI.pm
+++ b/lib/PublicInbox/LEI.pm
@@ -83,7 +83,7 @@ 	$pwd //= $self->{env}->{PWD} = getcwd() // die "getcwd(PWD=$pwd): $!";
 	File::Spec->rel2abs($p, $pwd);
 }
 
-sub _store_path ($) {
+sub store_path ($) {
 	my ($self) = @_;
 	rel2abs($self, ($self->{env}->{XDG_DATA_HOME} //
 		($self->{env}->{HOME} // '/nonexistent').'/.local/share')
@@ -188,7 +188,7 @@ 		'git-config(1) wrapper for '._config_path($_[0]);
 	}, qw(config-file|system|global|file|f=s), # for conflict detection
 	 qw(C=s@), pass_through('git config') ],
 'init' => [ '[DIRNAME]', sub {
-	"initialize storage, default: "._store_path($_[0]);
+	"initialize storage, default: ".store_path($_[0]);
 	}, qw(quiet|q C=s@) ],
 'daemon-kill' => [ '[-SIGNAL]', 'signal the lei-daemon',
 	# "-C DIR" conflicts with -CHLD, here, and chdir makes no sense, here
@@ -640,7 +640,7 @@ 	my $cfg = _lei_cfg($self, $creat);
 	$cfg->{-lei_store} //= do {
 		require PublicInbox::LeiStore;
 		my $dir = $cfg->{'leistore.dir'};
-		$dir //= $creat ? _store_path($self) : return;
+		$dir //= $creat ? store_path($self) : return;
 		PublicInbox::LeiStore->new($dir, { creat => $creat });
 	};
 }
@@ -689,7 +689,7 @@ sub lei_init {
 	my ($self, $dir) = @_;
 	my $cfg = _lei_cfg($self, 1);
 	my $cur = $cfg->{'leistore.dir'};
-	$dir //= _store_path($self);
+	$dir //= store_path($self);
 	$dir = rel2abs($self, $dir);
 	my @cur = stat($cur) if defined($cur);
 	$cur = File::Spec->canonpath($cur // $dir);
diff --git a/lib/PublicInbox/LeiStore.pm b/lib/PublicInbox/LeiStore.pm
index ae2639148918d6fc741c75f4039fdd01568021c7..26f975c307402535643432389f45c4ceb7e6638a 100644
--- a/lib/PublicInbox/LeiStore.pm
+++ b/lib/PublicInbox/LeiStore.pm
@@ -261,7 +261,7 @@ sub write_prepare {
 	my ($self, $lei) = @_;
 	unless ($self->{-ipc_req}) {
 		require PublicInbox::LeiXSearch;
-		$self->ipc_lock_init;
+		$self->ipc_lock_init($lei->store_path . '/ipc.lock');
 		# Mail we import into lei are private, so headers filtered out
 		# by -mda for public mail are not appropriate
 		local @PublicInbox::MDA::BAD_HEADERS = ();