diff --git a/Lib/test/test_idle.py b/Lib/test/test_idle.py
index 177e3eb..b94672c 100644
--- a/Lib/test/test_idle.py
+++ b/Lib/test/test_idle.py
@@ -18,7 +18,7 @@
 ##            # tkinter.test.suppport in 3.x
 ##            try:
 ##                check_tk_availability()
-##            except unittest.SkipTest:  
+##            except unittest.SkipTest:
 ##                raise tk.TclError
         root = tk.Tk()
         root.destroy()