diff --git a/hosts/jupiter/hardware-configuration.nix b/hosts/jupiter/hardware-configuration.nix
index 71ec6ae..381b59b 100644
--- a/hosts/jupiter/hardware-configuration.nix
+++ b/hosts/jupiter/hardware-configuration.nix
@@ -136,7 +136,7 @@
             "ssh://prepaid-big.kabtop.de:2220/mnt/snapshots/root" = {
               target = "/mnt/snapshots/Pluto/@snapshots/@kabtop";
               subvolume = {
-                "@/var" = {};
+                "@var" = {};
               };
             };
           };
diff --git a/hosts/kabtop/hardware-configuration.nix b/hosts/kabtop/hardware-configuration.nix
index 7e68b84..4dcacbf 100644
--- a/hosts/kabtop/hardware-configuration.nix
+++ b/hosts/kabtop/hardware-configuration.nix
@@ -38,6 +38,7 @@
   };
 
   services.btrbk = {
+    extraPackages = [pkgs.lz4 pkgs.mbuffer];
     instances = {
       hf = {
         onCalendar = "hourly";