diff --git a/Lib/idlelib/keydefs.py b/Lib/idlelib/keydefs.py
index 3d348930fd8..455253aee0e 100644
--- a/Lib/idlelib/keydefs.py
+++ b/Lib/idlelib/keydefs.py
@@ -1,7 +1,7 @@
 windows_keydefs = \
-{'<<Copy>>': ['<Control-c>'],
- '<<Cut>>': ['<Control-x>'],
- '<<Paste>>': ['<Control-v>'],
+{'<<Copy>>': ['<Control-c>', '<Control-C>'],
+ '<<Cut>>': ['<Control-x>', '<Control-X>'],
+ '<<Paste>>': ['<Control-v>', '<Control-V>'],
  '<<beginning-of-line>>': ['<Control-a>', '<Home>'],
  '<<center-insert>>': ['<Control-l>'],
  '<<close-all-windows>>': ['<Control-q>'],