diff --git a/bash/mount.sh b/bash/mount.sh
index 250e2b7..c3ee8a3 100644
--- a/bash/mount.sh
+++ b/bash/mount.sh
@@ -74,6 +74,7 @@ if [ "${directory}" ] ; then
         cp overlay/mount/{vmlinuz,initrd.img} "${directory}"
         mksquashfs \
 'overlay/mount' "${directory}/filesystem.squashfs" \
+-noappend \
 -comp 'zstd' -Xcompression-level "${level}"
         chown --recursive 1000:1000 "${directory}"
     fi