diff --git a/Lib/site.py b/Lib/site.py
--- a/Lib/site.py
+++ b/Lib/site.py
@@ -331,19 +331,17 @@ def addsitepackages(known_paths, prefixe
 
 def setquit():
     """Define new builtins 'quit' and 'exit'.
 
     These are objects which make the interpreter exit when called.
     The repr of each object contains a hint at how it works.
 
     """
-    if os.sep == ':':
-        eof = 'Cmd-Q'
-    elif os.sep == '\\':
+    if os.sep == '\\':
         eof = 'Ctrl-Z plus Return'
     else:
         eof = 'Ctrl-D (i.e. EOF)'
 
     builtins.quit = _sitebuiltins.Quitter('quit', eof)
     builtins.exit = _sitebuiltins.Quitter('exit', eof)