diff --git a/Lib/test/test_tkinter/test_widgets.py b/Lib/test/test_tkinter/test_widgets.py
index 2535daed97738a..4f37ceccbc5601 100644
--- a/Lib/test/test_tkinter/test_widgets.py
+++ b/Lib/test/test_tkinter/test_widgets.py
@@ -1845,7 +1845,7 @@ def test_selection_event(self):
         lb = self.create(selectmode='browse', exportselection=False)
         lb.insert(0, *('el%d' % i for i in range(5)))
         lb.pack()
-        lb.update()
+        self.require_mapped(lb)
         events = []
         lb.bind('<<ListboxSelect>>', lambda e: events.append(lb.curselection()))
         lb.focus_force()
diff --git a/Lib/test/test_ttk/test_widgets.py b/Lib/test/test_ttk/test_widgets.py
index a6e9303e06d236..5054ad8b9adf3f 100644
--- a/Lib/test/test_ttk/test_widgets.py
+++ b/Lib/test/test_ttk/test_widgets.py
@@ -1942,7 +1942,7 @@ def test_virtual_events(self):
         self.tv.insert(parent, 'end')
         item2 = self.tv.insert('', 'end')
         self.tv.pack()
-        self.tv.update()
+        self.require_mapped(self.tv)
         selects, opens, closes = [], [], []
         self.tv.bind('<<TreeviewSelect>>',
                      lambda e: selects.append(self.tv.selection()))