diff --git a/molecules/spinbase.common b/molecules/spinbase.common
index 0145df8..f542a15 100644
--- a/molecules/spinbase.common
+++ b/molecules/spinbase.common
@@ -12,7 +12,7 @@ release_file: /etc/sabayon-edition
 extra_rsync_parameters: --one-file-system
 
 # Enable XZ compression in mksquashfs
-extra_mksquashfs_parameters: -b 131072 -b 131072 -comp xz
+extra_mksquashfs_parameters: -b 131072 -comp xz
 
 # Merge directory with destination LiveCD root
 %env merge_livecd_root: ${SABAYON_MOLECULE_HOME:-/sabayon}/boot/core