diff --git a/docs/public/debian/system/system.rst b/docs/public/debian/system/system.rst
index 8bc20cd..8f4c88e 100644
--- a/docs/public/debian/system/system.rst
+++ b/docs/public/debian/system/system.rst
@@ -327,6 +327,7 @@ Archive prepared file system
  mksquashfs \
  '/squashfs-root' \
  'filesystem.squashfs' \
+ -noappend \
  -b '1m' \
  -comp 'zstd' \
  -Xcompression-level 22