diff --git a/server/asyncserver.py b/server/asyncserver.py
index 2d396690..33e80aff 100644
--- a/server/asyncserver.py
+++ b/server/asyncserver.py
@@ -25,7 +25,7 @@ __copyright__ = "Copyright (c) 2004 Cyril Jaquier"
 __license__ = "GPL"
 
 from pickle import dumps, loads, HIGHEST_PROTOCOL
-import asyncore, asynchat, socket, os, logging
+import asyncore, asynchat, socket, os, logging, sys
 
 # Gets the instance of the logger.
 logSys = logging.getLogger("fail2ban.server")