diff --git a/Lib/modulefinder.py b/Lib/modulefinder.py
index 989172aa8f6..478c74912d2 100644
--- a/Lib/modulefinder.py
+++ b/Lib/modulefinder.py
@@ -1,5 +1,4 @@
 """Find modules used by a script, using introspection."""
-# This module should be kept compatible with Python 2.2, see PEP 291.
 
 from __future__ import generators
 import dis
@@ -10,11 +9,7 @@ import sys
 import types
 import struct
 
-if hasattr(sys.__stdout__, "newlines"):
-    READ_MODE = "U"  # universal line endings
-else:
-    # remain compatible with Python  < 2.3
-    READ_MODE = "r"
+READ_MODE = "rU"
 
 # XXX Clean up once str8's cstor matches bytes.
 LOAD_CONST = bytes([dis.opname.index('LOAD_CONST')])
diff --git a/Lib/pkgutil.py b/Lib/pkgutil.py
index ff3467ab7c4..27dd887d869 100644
--- a/Lib/pkgutil.py
+++ b/Lib/pkgutil.py
@@ -1,8 +1,5 @@
 """Utilities to support packages."""
 
-# NOTE: This module must remain compatible with Python 2.3, as it is shared
-# by setuptools for distribution with Python 2.3 and up.
-
 import os
 import sys
 import imp
diff --git a/Lib/subprocess.py b/Lib/subprocess.py
index b47ebb8aaca..391edcae1e2 100644
--- a/Lib/subprocess.py
+++ b/Lib/subprocess.py
@@ -2,8 +2,6 @@
 #
 # For more information about this module, see PEP 324.
 #
-# This module should remain compatible with Python 2.2, see PEP 291.
-#
 # Copyright (c) 2003-2005 by Peter Astrand <astrand@lysator.liu.se>
 #
 # Licensed to PSF under a Contributor Agreement.