diff --git a/itchat/components/login.py b/itchat/components/login.py
index c1fb0391..c4e04ecf 100644
--- a/itchat/components/login.py
+++ b/itchat/components/login.py
@@ -59,8 +59,9 @@ def login(self, enableCmdQR=False, picDir=None, qrCallback=None,
                 if isLoggedIn is not None:
                     logger.info('Please press confirm on your phone.')
                     isLoggedIn = None
-            elif status != '408':
+            elif status in ['408', '400']:
                 break
+            time.sleep(1)
         if isLoggedIn:
             break
         elif self.isLogging: