diff --git a/playbooks/roles/backups/restic/setup/files/restic-batch b/playbooks/roles/backups/restic/setup/files/restic-batch
index d63d62e..b92bb45 100644
--- a/playbooks/roles/backups/restic/setup/files/restic-batch
+++ b/playbooks/roles/backups/restic/setup/files/restic-batch
@@ -81,6 +81,7 @@ class Volume(abc.ABC):
             # --------------------------------------------------------------------------------------
             subprocess.run(
                 self._restic_cmd_base + ["forget", "--prune",
+                                         "--group-by", "",
                                          "--keep-daily", str(self._restic_keep_daily),
                                          "--keep-monthly", str(self._restic_keep_monthly)],
                 env=self._environ, check=True,