diff --git a/Lib/test/regrtest.py b/Lib/test/regrtest.py
index 5eea1d996c0..30792c2f664 100755
--- a/Lib/test/regrtest.py
+++ b/Lib/test/regrtest.py
@@ -560,6 +560,9 @@ def findtests(testdir=None, stdtests=STDTESTS, nottests=NOTTESTS):
 def replace_stdout():
     """Set stdout encoder error handler to backslashreplace (as stderr error
     handler) to avoid UnicodeEncodeError when printing a traceback"""
+    if os.name == "nt":
+        # Replace sys.stdout breaks the stdout newlines on Windows: issue #8533
+        return
     stdout = sys.stdout
     sys.stdout = open(stdout.fileno(), 'w',
         encoding=stdout.encoding,