diff --git a/gather_new_user.py b/gather_new_user.py
index 3df950b..b055284 100644
--- a/gather_new_user.py
+++ b/gather_new_user.py
@@ -16,7 +16,7 @@ mydb = MysqlBase(**DB)
 
 def get_last_time(gameid, channelid, ad_channel):
     sql = f"""SELECT
-        register_time 
+        last_time 
     FROM
         newusers_line 
     where
@@ -24,7 +24,7 @@ def get_last_time(gameid, channelid, ad_channel):
         and channelid={channelid} 
         and ad_channel='{ad_channel}'      
     ORDER BY
-        register_time DESC      LIMIT 1"""
+        last_time DESC      LIMIT 1"""
     data = mydb.query(sql)
     try:
         pdb.set_trace()