diff --git a/py2cytoscape/data/network_view.py b/py2cytoscape/data/network_view.py
index 93faacc..f68376f 100644
--- a/py2cytoscape/data/network_view.py
+++ b/py2cytoscape/data/network_view.py
@@ -78,7 +78,7 @@ def __get_views(self, obj_type=None, format='view'):
         elif format is 'view':
             return self.__get_view_objects(views, obj_type)
         elif format is 'df':
-            return _self.__get_view_df(views)
+            return self.__get_view_df(views)
         else:
             raise ValueError('Format not supported: ' + format)