diff --git a/ming/mim.py b/ming/mim.py
index 1a4ec16..98e631f 100644
--- a/ming/mim.py
+++ b/ming/mim.py
@@ -103,6 +103,10 @@ def _ensure_connected(self):
     def _is_writable(self):
         return True
 
+    @property
+    def is_mongos(self):
+        return False
+
 
 class Database(database.Database):
     def __init__(self, client, name, **__):
diff --git a/ming/tests/test_mim.py b/ming/tests/test_mim.py
index 418d4ab..e43953d 100644
--- a/ming/tests/test_mim.py
+++ b/ming/tests/test_mim.py
@@ -7,7 +7,7 @@
 from bson.raw_bson import RawBSONDocument
 
 from ming import create_datastore, mim
-from pymongo import UpdateOne
+from pymongo import UpdateOne, CursorType
 from pymongo.errors import OperationFailure, DuplicateKeyError
 from unittest.mock import patch
 
@@ -155,6 +155,7 @@ def test_find_with_invalid_kwargs(self):
         self.assertRaises(TypeError, self.bind.db.coll.find, {'a': 2}, foo=123)
         self.assertRaises(TypeError, self.bind.db.coll.find_one, foo=123)
         self.bind.db.coll.find(allow_disk_use=True)  # kwargs that pymongo knows are ok
+        self.bind.db.coll.find(cursor_type=CursorType.EXHAUST)
 
     def test_rewind(self):
         collection = self.bind.db.coll