diff --git a/qemu/rootfs/etc/rc b/qemu/rootfs/etc/rc
index 66d9f94..b6ac1e3 100755
--- a/qemu/rootfs/etc/rc
+++ b/qemu/rootfs/etc/rc
@@ -1,4 +1,5 @@
 #!/bin/busybox sh
+# shellcheck shell=dash
 # Stage-1 rc: sourced by /init (still PID 1, initramfs root) when a virtio
 # disk is present. Emulates U-Boot's slot choice — mount the validated slot's
 # rootfs and switch_root into it. This is an EMULATION of the A/B selection
diff --git a/qemu/rootfs/init b/qemu/rootfs/init
index c03c699..948f165 100755
--- a/qemu/rootfs/init
+++ b/qemu/rootfs/init
@@ -1,4 +1,5 @@
 #!/bin/busybox sh
+# shellcheck shell=dash
 # WardenOS QEMU device sim: initramfs /init (PID 1).
 #
 # Phase-1 duty: prove the kernel booted on -M virt — print the sentinel the
diff --git a/qemu/rootfs/sbin/init b/qemu/rootfs/sbin/init
index efdd651..bf5626e 100755
--- a/qemu/rootfs/sbin/init
+++ b/qemu/rootfs/sbin/init
@@ -1,4 +1,5 @@
 #!/bin/busybox sh
+# shellcheck shell=dash
 # Stage-2 init: PID 1 on the disk rootfs (rootfs_a or rootfs_b), reached via
 # switch_root from the initramfs. Brings up the minimum a WardenOS userspace
 # needs — mounts, by-name symlinks, network, serial alias — then starts any