diff --git a/src/gui_builder.cc b/src/gui_builder.cc
index f0ed047..dee243c 100644
--- a/src/gui_builder.cc
+++ b/src/gui_builder.cc
@@ -448,10 +448,9 @@ GuiBuilder::GuiBuilder(const std::string& gladefile)
   // Main simulation widget  
   ScrolledWindow* simulation_window = NULL;
   _refXml->get_widget("SimulationScrolledWindow", simulation_window);
-  _simulation_widget = new SimulationWidget(Simulation::get_instance());
-  SimulationWidget* simulation_widget = manage(_simulation_widget);
-  simulation_window->add(*simulation_widget);
-  simulation_widget->show();
+  _simulation_widget = manage(new SimulationWidget(Simulation::get_instance()));
+  simulation_window->add(*_simulation_widget);
+  _simulation_widget->show();
 }