diff --git a/config/hooks/live/zzzz_ciss_crypt_squash.hook.binary b/config/hooks/live/zzzz_ciss_crypt_squash.hook.binary
index 24b5ad2..e773ec6 100644
--- a/config/hooks/live/zzzz_ciss_crypt_squash.hook.binary
+++ b/config/hooks/live/zzzz_ciss_crypt_squash.hook.binary
@@ -71,7 +71,7 @@ declare -i VAR_ROOTFS_SIZE=$(stat -c%s -- "${ROOTFS}")
 #   - dm-integrity Overhead (Tags and Journal)
 #   - Filesystem-Slack
 declare -i OVERHEAD_FIXED=$((64 * 1024 * 1024))
-declare -i OVERHEAD_PCT=1.6
+declare -i OVERHEAD_PCT=1
 declare -i ALIGN_BYTES=$(( 2048 * 1024 ))
 declare -i BASE_SIZE=$(( VAR_ROOTFS_SIZE + OVERHEAD_FIXED + (VAR_ROOTFS_SIZE * OVERHEAD_PCT / 100) ))
 declare -i VAR_LUKSFS_SIZE=$(( ( (BASE_SIZE + ALIGN_BYTES - 1) / ALIGN_BYTES ) * ALIGN_BYTES ))