diff --git a/mas2ff2.py b/mas2ff2.py
index e12b04b..f4fd178 100644
--- a/mas2ff2.py
+++ b/mas2ff2.py
@@ -165,11 +165,11 @@ def run(instance, access_token, fanfou_cookie, fanfou_token):
           if str(status['id']) not in posted_ids:
             content = status['content'].replace('<br />', '\n')
             content = re.sub('<.*?>', '', content)
-            logger.info(status['id'] + ' ' + content)
+            logger.info(str(status['id']) + ' ' + content)
             post_fanfou(fanfou_cookie, fanfou_token, content, status['media_attachments'])
             with open(last_id_file, 'a') as f:
               f.write(str(status['id']) + '\n')
-              posted_ids.append(status['id'])
+              posted_ids.append(str(status['id']))
               logger.info('write toot %s', status['content'])
             time.sleep(10)
       # update min_id