diff --git a/jlog/log_api.py b/jlog/log_api.py
index e7e43e7e6..cce830c03 100644
--- a/jlog/log_api.py
+++ b/jlog/log_api.py
@@ -15,12 +15,11 @@ from struct import unpack
 from subprocess import Popen
 from sys import platform, prefix, stderr
 from tempfile import NamedTemporaryFile
-from jumpserver.api import logger
 
 from jinja2 import FileSystemLoader, Template
 from jinja2.environment import Environment
 
-from jumpserver.api import BASE_DIR
+from jumpserver.api import BASE_DIR, logger
 from jlog.models import Log
 
 
@@ -95,7 +94,6 @@ def kill_invalid_connection():
             if log.login_type == 'ssh':
                 try:
                     os.kill(int(log.pid), 9)
-
                 except OSError:
                     pass
             elif (now - log.start_time).days < 1:
@@ -106,5 +104,3 @@ def kill_invalid_connection():
             log.save()
             logger.warn('kill log %s' % log.log_path)
 
-
-