diff --git a/libs/ardour/ardour/graph.h b/libs/ardour/ardour/graph.h
index 4a7d26eb8b..6226ed5602 100644
--- a/libs/ardour/ardour/graph.h
+++ b/libs/ardour/ardour/graph.h
@@ -88,7 +88,6 @@ class Graph : public SessionHandleRef
         std::list<Glib::Thread *> _thread_list;
         volatile bool _quit_threads;
         
-	node_list_t _nodes;
 	node_list_t _nodes_rt[2];
 
 	node_list_t _init_trigger_list[2];
diff --git a/libs/ardour/graph.cc b/libs/ardour/graph.cc
index 5e62ba0d6f..ae5758107a 100644
--- a/libs/ardour/graph.cc
+++ b/libs/ardour/graph.cc
@@ -103,7 +103,6 @@ Graph::session_going_away()
         }
 
         // now drop all references on the nodes.
-        _nodes.clear();
         _nodes_rt[0].clear();
         _nodes_rt[1].clear();
         _init_trigger_list[0].clear();