diff --git a/hysop/core/graph/computational_graph.py b/hysop/core/graph/computational_graph.py
index 732c7202b54a6db7ee1a8b010230a252d3f3438e..4c09f6e36f40bdfb8dbc69fb504eec5ff5e2e1fd 100644
--- a/hysop/core/graph/computational_graph.py
+++ b/hysop/core/graph/computational_graph.py
@@ -342,7 +342,6 @@ class ComputationalGraph(ComputationalGraphNode):
                     name_size=name_size, in_size=in_size,
                     arrow_size=arrow_size,
                     out_size=out_size, type_size=type_size)
-
         return u'\n{}\n'.format(framed_str(title=title, msg=ss[1:])).encode('utf-8')
 
     def topology_report(self):