diff --git a/Lib/test/test_tkinter/test_simpledialog.py b/Lib/test/test_tkinter/test_simpledialog.py
index 942b7ebf7120b3..64edbb645bc80f 100644
--- a/Lib/test/test_tkinter/test_simpledialog.py
+++ b/Lib/test/test_tkinter/test_simpledialog.py
@@ -49,6 +49,7 @@ def test_default_button(self):
     def test_return_activates_default(self):
         # <Return> invokes the default button.
         d = self.create()  # default 0
+        self.require_mapped(d.root)
         d.root.focus_force()
         d.root.update()
         d.root.event_generate('<Return>')
@@ -59,6 +60,7 @@ def test_return_no_default(self):
         # With no default button, <Return> rings the bell and leaves the dialog
         # open instead of activating a button.
         d = self.create(default=None)
+        self.require_mapped(d.root)
         d.root.focus_force()
         d.root.update()
         bells = []