diff --git a/main.sh b/main.sh
index 81cc110..9ab1f54 100644
--- a/main.sh
+++ b/main.sh
@@ -95,7 +95,7 @@ do_partition() {
 		parted $TARGET_PHY_ID unit mib -s -- set 1 esp on
 		sleep 2
 		start=$(( start + size ))
-		parted $TARGET_PHY_ID unit mib -s -- mkpart root ext4 $start -1s
+		parted $TARGET_PHY_ID unit mib -s -- mkpart root ext4 $start 100%
 		sleep 2
 		mkfs.vfat -F32 ${TARGET_PHY_ID}-part1
 		TARGET_PART="2"