diff --git a/weibo.py b/weibo.py
index e8f2660..371fc32 100644
--- a/weibo.py
+++ b/weibo.py
@@ -158,8 +158,6 @@ def _http_call(the_url, method, authorization, **kw):
     params = None
     boundary = None
     if method == _HTTP_UPLOAD:
-        # fix sina upload url:
-        the_url = the_url.replace('https://api.', 'https://upload.api.')
         params, boundary = _encode_multipart(**kw)
     else:
         params = _encode_params(**kw)