diff --git a/system/plots.py b/system/plots.py
index 705b01b..db3d052 100644
--- a/system/plots.py
+++ b/system/plots.py
@@ -658,6 +658,7 @@ class NetworkPlot(Plot):
         # Setup toolbar
         self._toolbar = PlotToolbar(self.canvas, None)
         self._toolbar.chk.connect ('toggled' ,self.set_selection_sensitive)
+        self._toolbar.set_property('show-arrow', False)
         self._toolbar.set_select_callback(self.rectangle_select_callback)
 
     def get_toolbar(self):