diff --git a/wx/lib/plot/plotcanvas.py b/wx/lib/plot/plotcanvas.py
index 763e2c0a..ec799ffe 100644
--- a/wx/lib/plot/plotcanvas.py
+++ b/wx/lib/plot/plotcanvas.py
@@ -707,7 +707,8 @@ class PlotCanvas(wx.Panel):
 
         def _do_update():
             self.Layout()
-            self._adjustScrollbars()
+            if self.last_draw is not None:
+                self._adjustScrollbars()
         wx.CallAfter(_do_update)
 
     def SetUseScientificNotation(self, useScientificNotation):