diff --git a/bin/DBConfig.py b/bin/DBConfig.py
index a671e3b..5df63ca 100644
--- a/bin/DBConfig.py
+++ b/bin/DBConfig.py
@@ -45,7 +45,7 @@ def mysql_config():
     create_sql_string += "`job` varchar(50) DEFAULT NULL,"
     create_sql_string += "`address` varchar(50) DEFAULT NULL,"
     create_sql_string += "`actime_time` varchar(50) NULL DEFAULT NULL"
-    create_sql_string += ") ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_0900_ai_ci;"
+    create_sql_string += ") ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;"
     mysql_info_dict['create_sql_string'] =  create_sql_string
 
     # insert into sql