diff --git a/django/test/client.py b/django/test/client.py
index 90804fc170..e6a9593dfd 100644
--- a/django/test/client.py
+++ b/django/test/client.py
@@ -252,7 +252,7 @@ class RequestFactory(object):
         "Construct a generic request object."
         return WSGIRequest(self._base_environ(**request))
 
-    def _encode_data(self, data, content_type, ):
+    def _encode_data(self, data, content_type):
         if content_type is MULTIPART_CONTENT:
             return encode_multipart(BOUNDARY, data)
         else: