diff --git a/gtk2_ardour/editor_ops.cc b/gtk2_ardour/editor_ops.cc
index fdca009185..6b48311b15 100644
--- a/gtk2_ardour/editor_ops.cc
+++ b/gtk2_ardour/editor_ops.cc
@@ -3393,9 +3393,10 @@ Editor::freeze_thread ()
 	SessionEvent::create_per_thread_pool ("freeze events", 64);
 	/* create per-thread buffers for process() tree to use */
 	current_interthread_info->process_thread.init ();
-
+	current_interthread_info->process_thread.get_buffers ();
 	clicked_routeview->audio_track()->freeze_me (*current_interthread_info);
 	current_interthread_info->done = true;
+	current_interthread_info->process_thread.drop_buffers();
 	return 0;
 }