diff --git a/test/test_collection.py b/test/test_collection.py
index 25dfe76f1..832593d25 100644
--- a/test/test_collection.py
+++ b/test/test_collection.py
@@ -603,7 +603,11 @@ class TestCollection(unittest.TestCase):
         db = self.db
         db.drop_collection("test")
         db.test.save({})
-        self.assertEqual(db.test.options(), {})
+        expected = {}
+        if version.at_least(db.connection, (2, 7, 0)):
+            # usePowerOf2Sizes server default
+            expected["flags"] = 1
+        self.assertEqual(db.test.options(), expected)
         self.assertEqual(db.test.doesnotexist.options(), {})
 
         db.drop_collection("test")
diff --git a/test/test_database.py b/test/test_database.py
index 265f07b45..82a706644 100644
--- a/test/test_database.py
+++ b/test/test_database.py
@@ -110,10 +110,14 @@ class TestDatabase(unittest.TestCase):
         db.drop_collection("test.foo")
         db.create_collection("test.foo")
         self.assertTrue(u"test.foo" in db.collection_names())
+        expected = {}
+        if version.at_least(self.client, (2, 7, 0)):
+            # usePowerOf2Sizes server default
+            expected["flags"] = 1
         result = db.test.foo.options()
         # mongos 2.2.x adds an $auth field when auth is enabled.
         result.pop('$auth', None)
-        self.assertEqual(result, {})
+        self.assertEqual(result, expected)
         self.assertRaises(CollectionInvalid, db.create_collection, "test.foo")
 
     def test_collection_names(self):