diff --git a/wx/lib/agw/toasterbox.py b/wx/lib/agw/toasterbox.py
index ab08b70f..d87ea4d9 100644
--- a/wx/lib/agw/toasterbox.py
+++ b/wx/lib/agw/toasterbox.py
@@ -1247,6 +1247,7 @@ class ToasterBoxWindow(wx.Frame):
 
             if self._amount < 0:
                 self.Hide()
+                self.showtime.Stop()
                 if self._parent2:
                     self._parent2.Notify()