diff --git a/molecules/sabayon-amd64-spinbase.spec b/molecules/sabayon-amd64-spinbase.spec
index ecec5bb..c190126 100644
--- a/molecules/sabayon-amd64-spinbase.spec
+++ b/molecules/sabayon-amd64-spinbase.spec
@@ -1,6 +1,7 @@
 # Use abs path, otherwise daily builds automagic won't work
 %env %import ${SABAYON_MOLECULE_HOME:-/sabayon}/molecules/spinbase.common
 %env %import ${SABAYON_MOLECULE_HOME:-/sabayon}/molecules/amd64.common
+extra_mksquashfs_parameters: -b 64K -comp xz -Xdict-size 100%
 
 %env destination_chroot: ${SABAYON_MOLECULE_HOME:-/sabayon}/chroots/default
 %env inner_chroot_script: ${SABAYON_MOLECULE_HOME:-/sabayon}/scripts/inner_chroot_script.sh