diff --git a/app/account_service.py b/app/account_service.py
index e572bd0..cfab6e8 100644
--- a/app/account_service.py
+++ b/app/account_service.py
@@ -46,7 +46,7 @@ def signup():
                 session['expiry_date'] = get_expiry_date(username)
                 session['articleID'] = None
                 return '<p>恭喜，你已成功注册， 你的用户名是 <a href="%s">%s</a>。</p>\
-<p><a href="/%s">开始使用</a> <a href="/">返回首页</a><p/>' % (username, username, username)
+                <p><a href="/%s">开始使用</a> <a href="/">返回首页</a><p/>' % (username, username, username)
             else:
                 return '用户名密码验证失败。'