diff --git a/rbackup/struct/hierarchy.py b/rbackup/struct/hierarchy.py
index ce9ce8e..001330d 100644
--- a/rbackup/struct/hierarchy.py
+++ b/rbackup/struct/hierarchy.py
@@ -70,7 +70,7 @@ class Hierarchy(os.PathLike):
     def _gen_metadata(self):
         """Generate metadata for this repository.
 
-            After this method is called, the data necessary for this hierarchy has been created.
+        After this method is called, the data necessary for this hierarchy has been created.
         """
         raise NotImplementedError("This method must be called in a child class.")
 
diff --git a/rbackup/struct/repository.py b/rbackup/struct/repository.py
index 21d8d3d..5cf7b39 100644
--- a/rbackup/struct/repository.py
+++ b/rbackup/struct/repository.py
@@ -162,7 +162,7 @@ class Repository(Hierarchy):
 
     def _gen_metadata(self):
         """Generate metadata for this repository.
-            After this method is called, the data necessary for this repository has been created.
+        After this method is called, the data necessary for this repository has been created.
         """
         if self.metadata_path.exists():
             self._snapshot_metadata = self.read_metadata()
diff --git a/tests/test_repository.py b/tests/test_repository.py
index b6b3649..d82c985 100644
--- a/tests/test_repository.py
+++ b/tests/test_repository.py
@@ -160,13 +160,13 @@ class TestRepositoryCreateSnapshotNormalCases(unittest.TestCase):
 
     def setUp(self):
         self.patched_path = patch.multiple(
-                Path, exists=DEFAULT, mkdir=DEFAULT, symlink_to=DEFAULT, touch=DEFAULT
+            Path, exists=DEFAULT, mkdir=DEFAULT, symlink_to=DEFAULT, touch=DEFAULT
         )
         self.patched_metadata = patch.multiple(
-                Repository, read_metadata=DEFAULT, write_metadata=DEFAULT
+            Repository, read_metadata=DEFAULT, write_metadata=DEFAULT
         )
         self.patched_snapshot = patch(
-                f"{TESTING_PACKAGE}.repository.Snapshot", spec_set=Snapshot
+            f"{TESTING_PACKAGE}.repository.Snapshot", spec_set=Snapshot
         )
 
         self.mocked_path = self.patched_path.start()