diff --git a/conts-snap.sh b/conts-snap.sh
index 55825c8..0dff06f 100755
--- a/conts-snap.sh
+++ b/conts-snap.sh
@@ -8,7 +8,7 @@ mount $containers_dir
 cd /var/lib/machines
 for filename in *; do
   systemctl start cont-snap@$filename.service
-  btrfs subvolume delete $containers_dir/$filename/$(date -d "-15 days" +"%Y%m%d")*
+  btrfs subvolume delete $containers_dir/$filename/$(date -d "-8 days" +"%Y%m%d")*
 done
 
 umount $containers_dir