diff --git a/Lib/test/test_csv.py b/Lib/test/test_csv.py
index c24c55f..7eb3a7f 100644
--- a/Lib/test/test_csv.py
+++ b/Lib/test/test_csv.py
@@ -6,7 +6,7 @@
 import sys
 import os
 import unittest
-from io import StringIO, BytesIO
+from io import StringIO
 from tempfile import TemporaryFile
 import csv
 import gc