diff --git a/Lib/urllib/parse.py b/Lib/urllib/parse.py
index 528c0a7aafb..c0995dc010e 100644
--- a/Lib/urllib/parse.py
+++ b/Lib/urllib/parse.py
@@ -707,7 +707,7 @@ def quote_plus(string, safe='', encoding=None, errors=None):
 def quote_from_bytes(bs, safe='/'):
     """Like quote(), but accepts a bytes object rather than a str, and does
     not perform string-to-bytes encoding.  It always returns an ASCII string.
-    quote_from_bytes(b'abc def\xab') -> 'abc%20def%AB'
+    quote_from_bytes(b'abc def\x3f') -> 'abc%20def%3f'
     """
     if not isinstance(bs, (bytes, bytearray)):
         raise TypeError("quote_from_bytes() expected bytes")
diff --git a/Misc/NEWS b/Misc/NEWS
index 23ad604486e..ce2fe637135 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -44,6 +44,9 @@ Core and Builtins
 Library
 -------
 
+- Issue #14920: Fix the help(urllib.parse) failure on locale C on terminals.
+  Have ascii characters in help.
+
 - Issue #14548: Make multiprocessing finalizers check pid before
   running to cope with possibility of gc running just after fork.