Typo discovered by Case Roole.
diff --git a/Demo/tkinter/guido/dialog.py b/Demo/tkinter/guido/dialog.py
index 62ad3e3..1f794ae 100755
--- a/Demo/tkinter/guido/dialog.py
+++ b/Demo/tkinter/guido/dialog.py
@@ -47,7 +47,7 @@
 		    padx='2m', pady='2m', ipadx='2m', ipady='1m')
 	else:
 	    b.pack (side=LEFT, expand=1,
-		    padx='3m', pady='3m', ipady='2m', ipady='1m')
+		    padx='3m', pady='3m', ipadx='2m', ipady='1m')
 	i = i+1
 
     # 4. Set up a binding for <Return>, if there's a default,