diff --git a/alpine-rebuild-initramfs.sh b/alpine-rebuild-initramfs.sh
index 30923d1..daa32d7 100755
--- a/alpine-rebuild-initramfs.sh
+++ b/alpine-rebuild-initramfs.sh
@@ -58,7 +58,7 @@ run_root rc-update add sshd
 run_root rc-update add rdnssd
 run_root rc-update add networking
 run_root rc-update add hostname
-run_root sed -i 's/root:!::0:::::/root:::0:::::/' /etc/shadow
+run_root sed -i 's/root:!::0:::::/root:*::0:::::/' /etc/shadow
 
 sudo tee "$rootfs_tmpdir/etc/network/interfaces" <<EOF
 auto lo