diff --git a/mongoengine/base/datastructures.py b/mongoengine/base/datastructures.py
index b9aca8fa..c727ec78 100644
--- a/mongoengine/base/datastructures.py
+++ b/mongoengine/base/datastructures.py
@@ -127,7 +127,7 @@ class BaseList(list):
         return value
 
     def __iter__(self):
-        for i in xrange(self.__len__()):
+        for i in six.moves.range(self.__len__()):
             yield self[i]
 
     def __setitem__(self, key, value, *args, **kwargs):
diff --git a/mongoengine/queryset/queryset.py b/mongoengine/queryset/queryset.py
index b5d2765b..cf913b01 100644
--- a/mongoengine/queryset/queryset.py
+++ b/mongoengine/queryset/queryset.py
@@ -1,3 +1,5 @@
+import six
+
 from mongoengine.errors import OperationError
 from mongoengine.queryset.base import (BaseQuerySet, CASCADE, DENY, DO_NOTHING,
                                        NULLIFY, PULL)
@@ -112,7 +114,7 @@ class QuerySet(BaseQuerySet):
         # Pull in ITER_CHUNK_SIZE docs from the database and store them in
         # the result cache.
         try:
-            for _ in xrange(ITER_CHUNK_SIZE):
+            for _ in six.moves.range(ITER_CHUNK_SIZE):
                 self._result_cache.append(self.next())
         except StopIteration:
             # Getting this exception means there are no more docs in the
@@ -166,7 +168,7 @@ class QuerySetNoCache(BaseQuerySet):
             return '.. queryset mid-iteration ..'
 
         data = []
-        for _ in xrange(REPR_OUTPUT_SIZE + 1):
+        for _ in six.moves.range(REPR_OUTPUT_SIZE + 1):
             try:
                 data.append(self.next())
             except StopIteration: