diff --git a/django/db/models/fields/related_descriptors.py b/django/db/models/fields/related_descriptors.py
index 20f247c603..7ade10ca6e 100644
--- a/django/db/models/fields/related_descriptors.py
+++ b/django/db/models/fields/related_descriptors.py
@@ -641,7 +641,6 @@ def create_reverse_many_to_one_manager(superclass, rel):
 
         def add(self, *objs, bulk=True):
             self._remove_prefetched_objects()
-            objs = list(objs)
             db = router.db_for_write(self.model, instance=self.instance)
 
             def check_and_update_obj(obj):