diff --git a/python/paddle/v2/config_base.py b/python/paddle/v2/config_base.py
index 8e2795d20f..1ec1d7bbdf 100644
--- a/python/paddle/v2/config_base.py
+++ b/python/paddle/v2/config_base.py
@@ -14,9 +14,8 @@
 
 import collections
 import re
-
-import paddle.trainer_config_helpers as conf_helps
 from paddle.trainer_config_helpers.default_decorators import wrap_name_default
+import paddle.trainer_config_helpers as conf_helps
 
 
 class LayerType(type):