diff --git a/seqio/utils.py b/seqio/utils.py
index ca94aa91..4fdbb958 100644
--- a/seqio/utils.py
+++ b/seqio/utils.py
@@ -1410,8 +1410,6 @@ def mixing_rate_num_characters(
 _NEXT_MAP_SEED = None
 
 
-
-
 @contextlib.contextmanager
 def map_seed_manager(initial_seed=None):
   """Contextmanager to control the initial seed used by `map_over_dataset`."""