diff --git a/python/paddle/v2/config_base.py b/python/paddle/v2/config_base.py
index 0fc711e99a18a4ed2665315c22b78e96be942b89..fa2ccec6c3270541dd6b13fdfd2323d10ceac642 100644
--- a/python/paddle/v2/config_base.py
+++ b/python/paddle/v2/config_base.py
@@ -93,8 +93,6 @@ def __convert_to_v2__(method_name, parent_names, is_default_name=True):
 
             name = kwargs.get('name', None)
             super(V2LayerImpl, self).__init__(name, parent_layers)
-            if kwargs.has_key('size'):
-                self.size = kwargs['size']
             self.__other_kwargs__ = other_kwargs
 
         if wrapper is not None: