diff --git a/nixos/modules/borgbackup.nix b/nixos/modules/borgbackup.nix
index ca81cc2..784981c 100644
--- a/nixos/modules/borgbackup.nix
+++ b/nixos/modules/borgbackup.nix
@@ -121,7 +121,7 @@ in {
       jobs.fsaccount = {
         preHook = ''
           mkdir -p /home/fsaccount/sicherung # Create if it does not exist
-          ${pkgs.rsync}/bin/rsync -e 'ssh -i /run/secrets/backupKey' -r fachschaft@gw1.mathematik.tu-darmstadt.de:/home/fachschaft/* /home/fsaccount/sicherung
+          ${pkgs.rsync}/bin/rsync --rsh='ssh -i /run/secrets/backupKey' --recursive --delete fachschaft@gw1.mathematik.tu-darmstadt.de:/home/fachschaft/* /home/fsaccount/sicherung
         '';
         paths = "/home/fsaccount/sicherung";
         encryption.mode = "none"; # Otherwise the key is next to the backup or we have human interaction.