diff --git a/app/sso/middleware.py b/app/sso/middleware.py
index f743c3b..ceb4b5f 100644
--- a/app/sso/middleware.py
+++ b/app/sso/middleware.py
@@ -1,3 +1,4 @@
+from django.db import IntegrityError
 
 class IGBMiddleware(object):
     """