diff --git a/sh/fs.sh b/sh/fs.sh
index fb3db50..6cc85ff 100644
--- a/sh/fs.sh
+++ b/sh/fs.sh
@@ -36,7 +36,7 @@ fs_make_btrfs_swap() {
 	fi
 }
 
-fs_make_fat() {
+sh_fs_make_fat() {
 	local device="${1}"
 	local name="${2}"
 	local volid="${3}"
diff --git a/sh/rescue/hetzner.sh b/sh/rescue/hetzner.sh
index f5283f2..9de0134 100644
--- a/sh/rescue/hetzner.sh
+++ b/sh/rescue/hetzner.sh
@@ -44,7 +44,7 @@ rescue_wipe_0_init_hetzner_8_8() {
 		echo "#${number}: ${device}3"
 		# format esp
 		sh_fs_wipe "${device}3" "1M"
-		fs_make_fat "${device}3" "esp-${number}" "0000000${number}"
+		sh_fs_make_fat "${device}3" "esp-${number}" "0000000${number}"
 		# mount esp
 		mkdir --parents "/media/esp/${number}"
 		mount "${device}3" "/media/esp/${number}"
diff --git a/sh/rescue/ovh.sh b/sh/rescue/ovh.sh
index 732b045..117ac5e 100644
--- a/sh/rescue/ovh.sh
+++ b/sh/rescue/ovh.sh
@@ -20,7 +20,7 @@ rescue_wipe_0_init_ovh_vle2() {
 	# esp / wipe
 	sh_fs_wipe "${device}3" "1M"
 	# esp / format
-	fs_make_fat "${device}3" "esp" "00000001"
+	sh_fs_make_fat "${device}3" "esp" "00000001"
 	# esp / mount
 	mkdir --parents "/media/esp"
 	mount "${device}3" "/media/esp"