diff --git a/controller/Session_storage.py b/controller/Session_storage.py
index e596098..83e45da 100644
--- a/controller/Session_storage.py
+++ b/controller/Session_storage.py
@@ -1,7 +1,6 @@
 import cherrypy
 import cPickle as pickle
 from datetime import datetime
-from psycopg2 import ProgrammingError
 
 
 class Session_storage( object ):