diff --git a/AUTHORS b/AUTHORS
index 8493a687..1f7c743f 100644
--- a/AUTHORS
+++ b/AUTHORS
@@ -26,4 +26,5 @@ Patches and Suggestions
 - Richard Boulton
 - Miguel Olivares <miguel@moliware.com>
 - Alberto Paro
-- Jérémy Bethmont
\ No newline at end of file
+- Jérémy Bethmont
+- 潘旭 (Xu Pan)
diff --git a/requests/models.py b/requests/models.py
index 8e608019..9b8f614f 100644
--- a/requests/models.py
+++ b/requests/models.py
@@ -230,7 +230,7 @@ class Request(object):
             for (k, v) in data.items():
                 result[k.encode('utf-8') if isinstance(k, unicode) else k] \
                      = v.encode('utf-8') if isinstance(v, unicode) else v
-            return result, urllib.urlencode(result)
+            return result, urllib.urlencode(result, doseq=True)
         else:
             return data, data