Index: django/http/__init__.py
===================================================================
--- django/http/__init__.py     (revision 6888)
+++ django/http/__init__.py     (working copy)
@@ -331,7 +331,7 @@
         chunk = self._iterator.next()
         if isinstance(chunk, unicode):
             chunk = chunk.encode(self._charset)
-        return chunk
+        return str(chunk)

     def close(self):
         if hasattr(self._container, 'close'):