diff --git a/servant/service/base.py b/servant/service/base.py
index bcc1a37..b565291 100644
--- a/servant/service/base.py
+++ b/servant/service/base.py
@@ -1,5 +1,7 @@
 import time
 import requests
+import six
+if six.PY3: unicode = str
 
 from ..config import Config
 from ..constants import *