diff --git a/oxdata/movie/models.py b/oxdata/movie/models.py
index 771c628..c08452b 100644
--- a/oxdata/movie/models.py
+++ b/oxdata/movie/models.py
@@ -10,6 +10,7 @@ import hashlib
 import base64
 import binascii
 
+from six import string_types
 from django.db import models
 from django.conf import settings
 import ox
@@ -36,7 +37,7 @@ def find(info, guess=True):
     else:
         for key in Imdb.keys:
             if key in info and info[key]:
-                if isinstance(info[key], basestring):
+                if isinstance(info[key], string_types):
                     fkey = '%s__iexact'%key
                 else:
                     fkey = key
@@ -118,7 +119,7 @@ class Imdb(models.Model):
                     value = info[key]
                     if isinstance(value, list):
                         value = u'\n'.join(value) + '\n'
-                    if isinstance(value, basestring):
+                    if isinstance(value, string_types):
                         value = normalize_value(value)
                     setattr(self, key, value)
             if self.season < 0:
@@ -227,7 +228,7 @@ class Imdb(models.Model):
         for key in list(j):
             if not j[key]:
                 del j[key]
-        if 'year' in j and isinstance(j['year'], basestring) and j['year'].isdigit():
+        if 'year' in j and isinstance(j['year'], string_types) and j['year'].isdigit():
             j['year'] = int(j['year'])
         return j