diff --git a/bash/fs.sh b/bash/fs.sh
index 07bd84f..bf59782 100644
--- a/bash/fs.sh
+++ b/bash/fs.sh
@@ -83,18 +83,23 @@ luks_format() {
 	local label="${3}"
 	local uuid="${4}"
 	if [ -b "${device}" ]; then
+		set -- \
+			--batch-mode \
+			--cipher "aes-xts-plain64" \
+			--hash "sha512" \
+			--iter-time 4096 \
+			--key-size 512 \
+			--pbkdf "argon2id" \
+			--type "luks2" \
+			--use-random \
+			--verbose
+		if [ -n "${label}" ]; then
+			set -- "${@}" --label "${label}"
+		fi
+		if [ -n "${uuid}" ]; then
+			set -- "${@}" --label "${uuid}"
+		fi
 		echo "${passphrase}" |
-			cryptsetup \
-				--batch-mode \
-				--cipher "aes-xts-plain64" \
-				--hash "sha512" \
-				--iter-time 4096 \
-				--key-size 512 \
-				--pbkdf "argon2id" \
-				--type "luks2" \
-				--use-random \
-				--verbose \
-				luksFormat \
-				"${device}"
+			cryptsetup "${@}" luksFormat "${device}"
 	fi
 }