diff --git a/mongoengine/fields.py b/mongoengine/fields.py
index ba508a70..aa5aa805 100644
--- a/mongoengine/fields.py
+++ b/mongoengine/fields.py
@@ -13,8 +13,6 @@ import pymongo
 import six
 from six import iteritems
 
-from mongoengine.queryset.transform import STRING_OPERATORS
-
 try:
     import dateutil
 except ImportError:
@@ -39,6 +37,7 @@ from mongoengine.errors import DoesNotExist, InvalidQueryError, ValidationError
 from mongoengine.python_support import StringIO
 from mongoengine.queryset import DO_NOTHING
 from mongoengine.queryset.base import BaseQuerySet
+from mongoengine.queryset.transform import STRING_OPERATORS
 
 try:
     from PIL import Image, ImageOps
diff --git a/mongoengine/mongodb_support.py b/mongoengine/mongodb_support.py
index 8234a616..b20ebc1e 100644
--- a/mongoengine/mongodb_support.py
+++ b/mongoengine/mongodb_support.py
@@ -6,6 +6,7 @@ from mongoengine.connection import get_connection
 
 # Constant that can be used to compare the version retrieved with
 # get_mongodb_version()
+MONGODB_34 = (3, 4)
 MONGODB_36 = (3, 6)
 
 
diff --git a/tests/document/instance.py b/tests/document/instance.py
index 04bddea1..0f2f0c0f 100644
--- a/tests/document/instance.py
+++ b/tests/document/instance.py
@@ -12,6 +12,7 @@ from bson import DBRef, ObjectId
 from pymongo.errors import DuplicateKeyError
 from six import iteritems
 
+from mongoengine.mongodb_support import get_mongodb_version, MONGODB_36, MONGODB_34
 from mongoengine.pymongo_support import list_collection_names
 from tests import fixtures
 from tests.fixtures import (PickleEmbedded, PickleTest, PickleSignalsTest,
@@ -467,10 +468,13 @@ class InstanceTest(MongoDBTestCase):
         doc = Animal(superphylum='Deuterostomia')
         doc.save()
 
+        mongo_db = get_mongodb_version()
+        CMD_QUERY_KEY = 'command' if mongo_db >= MONGODB_36 else 'query'
+
         with query_counter() as q:
             doc.reload()
             query_op = q.db.system.profile.find({'ns': 'mongoenginetest.animal'})[0]
-            self.assertEqual(set(query_op['query']['filter'].keys()), set(['_id', 'superphylum']))
+            self.assertEqual(set(query_op[CMD_QUERY_KEY]['filter'].keys()), set(['_id', 'superphylum']))
 
         Animal.drop_collection()
 
@@ -501,12 +505,17 @@ class InstanceTest(MongoDBTestCase):
         doc = Animal(is_mammal=True, name='Dog')
         doc.save()
 
+        mongo_db = get_mongodb_version()
+
         with query_counter() as q:
             doc.name = 'Cat'
             doc.save()
             query_op = q.db.system.profile.find({'ns': 'mongoenginetest.animal'})[0]
             self.assertEqual(query_op['op'], 'update')
-            self.assertEqual(set(query_op['query'].keys()), set(['_id', 'is_mammal']))
+            if mongo_db == MONGODB_34:
+                self.assertEqual(set(query_op['query'].keys()), set(['_id', 'is_mammal']))
+            else:
+                self.assertEqual(set(query_op['command']['q'].keys()), set(['_id', 'is_mammal']))
 
         Animal.drop_collection()