diff --git a/scripts/main.sh b/scripts/main.sh
index 69a4d7b..4b75333 100644
--- a/scripts/main.sh
+++ b/scripts/main.sh
@@ -369,7 +369,7 @@ function main_install() {
 
 	[[ $IS_EFI == "true" ]] \
 		&& mount_efivars
-	gentoo_chroot "$ROOT_MOUNTPOINT" "$GENTOO_INSTALL_REPO_BIND/scripts/main.sh" __install_gentoo_in_chroot
+	gentoo_chroot "$ROOT_MOUNTPOINT" "$GENTOO_INSTALL_REPO_BIND/install" __install_gentoo_in_chroot
 	gentoo_umount
 }
 
diff --git a/scripts/utils.sh b/scripts/utils.sh
index 5f89a29..b09d602 100644
--- a/scripts/utils.sh
+++ b/scripts/utils.sh
@@ -176,7 +176,7 @@ function cache_lsblk_output() {
 function get_device_by_ptuuid() {
 	local ptuuid="${1,,}"
 	local dev
-	if [[ -v CACHED_LSBLK_OUTPUT ]]; then
+	if [[ -v CACHED_LSBLK_OUTPUT && -n "$CACHED_LSBLK_OUTPUT" ]]; then
 		dev="$CACHED_LSBLK_OUTPUT"
 	else
 		dev="$(lsblk --all --path --pairs --output NAME,PTUUID,PARTUUID)" \