diff --git a/zfs-backup.py b/zfs-backup.py
index 86fdb52..4d3d1ec 100755
--- a/zfs-backup.py
+++ b/zfs-backup.py
@@ -450,7 +450,7 @@ class Dataset:
 
     @staticmethod
     def _get_n_oldest_snapshots(
-            snapshots: list[Snapshot], count: int
+        snapshots: list[Snapshot], count: int
     ) -> list[Snapshot]:
         snapshots.sort()
         return snapshots[:count]