diff --git a/Lib/idlelib/EditorWindow.py b/Lib/idlelib/EditorWindow.py
index a7970ba..de47350 100644
--- a/Lib/idlelib/EditorWindow.py
+++ b/Lib/idlelib/EditorWindow.py
@@ -47,7 +47,7 @@
     from idlelib.UndoDelegator import UndoDelegator
     from idlelib.IOBinding import IOBinding, filesystemencoding, encoding
     from idlelib import Bindings
-    from Tkinter import Toplevel
+    from tkinter import Toplevel
     from idlelib.MultiStatusBar import MultiStatusBar
 
     help_url = None