diff --git a/sql/audit_log.py b/sql/audit_log.py
index 37fc161db6..d1a5417045 100644
--- a/sql/audit_log.py
+++ b/sql/audit_log.py
@@ -2,8 +2,6 @@
 import logging
 import datetime
 import simplejson as json
-import geolite2
-import maxminddb
 
 from django.dispatch import receiver
 from django.utils import timezone
@@ -86,9 +84,8 @@ def get_client_ip(request):
 @receiver(user_logged_in)
 def user_logged_in_callback(sender, request, user, **kwargs):
     ip = get_client_ip(request)
-    ua = request.META.get('HTTP_USER_AGENT', 'unknown')
     now = timezone.now()
-    AuditEntry.objects.create(action=u'登入', extra_info='|'.join([ip,ua]), user_id=user.id, user_name=user.username, user_display=user.display, action_time=now)
+    AuditEntry.objects.create(action=u'登入', extra_info=ip, user_id=user.id, user_name=user.username, user_display=user.display, action_time=now)
 
 
 @receiver(user_logged_out)