diff --git a/bot.py b/bot.py
index ddb1804..5039ea2 100644
--- a/bot.py
+++ b/bot.py
@@ -2,6 +2,7 @@
 
 # modules
 import os
+import sys
 import time
 import json
 from pprint import pprint
@@ -153,11 +154,11 @@ def backup_db():
             'status': user._status,
             'question': user._question
         }
-    with open('users.json', 'w') as f:
+    with open(sys.path[0] + '/users.json', 'w') as f:
         json.dump(users_backup, f, indent='  ')
 
 def restore_db():
-    with open('users.json', 'r') as f:
+    with open(sys.path[0] + '/users.json', 'r') as f:
         users_restore = json.load(f)
         for key in users_restore.keys():
             user = users_restore[key]
diff --git a/interface.py b/interface.py
index edebb6a..28a0f37 100644
--- a/interface.py
+++ b/interface.py
@@ -2,6 +2,7 @@
 
 # modules
 import os
+import sys
 from random import choice
 import telepot
 from telepot.namedtuple import ReplyKeyboardMarkup, ReplyKeyboardRemove
@@ -228,7 +229,7 @@ class Kuser:
     def send_answer(self, text, file_id):
         self._status = '正常使用'
         # define filename
-        filename = self._username + self._question
+        filename = sys.path[0] + '/' + self._username + self._question
         if self._api.list_questions()[self._question][3] == 'Python':
             filename += '.py'
         else: