Ticket #4815: my-patch.diff

django/http/__init__.py

@@ -114 +114 @@
             self.encoding = encoding
         self._mutable = True
         for key, value in parse_qsl((query_string or ''), True): # keep_blank_values=True
-            self.appendlist(force_unicode(key, errors='replace'), force_unicode(value, errors='replace'))
+            self.appendlist(force_unicode(key, errors='replace', encoding=encoding), force_unicode(value, errors='replace', encoding=encoding))
         self._mutable = mutable
 
     def _assert_mutable(self):