diff --git a/django_mongodb_backend/features.py b/django_mongodb_backend/features.py
index e5f0b2cf2..10f206f1c 100644
--- a/django_mongodb_backend/features.py
+++ b/django_mongodb_backend/features.py
@@ -597,17 +597,11 @@ def django_test_skips(self):
         skips.update(self._django_test_skips)
         return skips
 
-    @cached_property
-    def is_mongodb_6_3(self):
-        return self.connection.get_database_version() >= (6, 3)
-
     @cached_property
     def supports_atlas_search(self):
         """Does the server support Atlas search queries and search indexes?"""
         try:
-            # An existing collection must be used on MongoDB 6, otherwise
-            # the operation will not error when unsupported.
-            self.connection.get_collection("django_migrations").list_search_indexes()
+            self.connection.get_collection("__null").list_search_indexes()
         except OperationFailure:
             # It would be best to check the error message or error code to
             # avoid hiding some other exception, but the message/code varies