diff --git a/cps/helper.py b/cps/helper.py
index a101778f..96259d9a 100755
--- a/cps/helper.py
+++ b/cps/helper.py
@@ -6,6 +6,7 @@ from cps import config
 from flask import current_app as app
 
 import smtplib
+import socket
 import sys
 import os
 import traceback