diff --git a/deepdiff/diff.py b/deepdiff/diff.py
index 911e831d..92ad9ac4 100755
--- a/deepdiff/diff.py
+++ b/deepdiff/diff.py
@@ -880,7 +880,8 @@ def _diff_by_forming_pairs_and_comparing_one_by_one(
                     x,
                     y,
                     child_relationship_class=child_relationship_class,
-                    child_relationship_param=j)
+                    child_relationship_param=j
+                )
                 self._diff(next_level, parents_ids_added, local_tree=local_tree)
 
     def _diff_ordered_iterable_by_difflib(