diff --git a/setup-disk.in b/setup-disk.in
index d7fa12dcbcc1a8bd8398f5cfef3d81a6a048c338..4d67fcd89f0c56df5df5ff3c1b7e933531ea196b 100644
--- a/setup-disk.in
+++ b/setup-disk.in
@@ -128,7 +128,7 @@ find_mount_dev() {
 }
 
 supported_boot_fs() {
-	local supported="ext2 ext3 ext4"
+	local supported="ext2 ext3 ext4 btrfs"
 	local fs=
 	for fs in $supported; do
 		[ "$fs" = "$1" ] && return 0