diff --git a/Lib/test/test_argparse.py b/Lib/test/test_argparse.py
index 08ff41368d9bb0..f4afec81cfa397 100644
--- a/Lib/test/test_argparse.py
+++ b/Lib/test/test_argparse.py
@@ -7107,9 +7107,13 @@ class TestColorized(TestCase):
     def setUp(self):
         super().setUp()
         # Ensure color even if ran with NO_COLOR=1
+        self.original_can_colorize = _colorize.can_colorize
         _colorize.can_colorize = lambda *args, **kwargs: True
         self.theme = _colorize.get_theme(force_color=True).argparse
 
+    def tearDown(self):
+        _colorize.can_colorize = self.original_can_colorize
+
     def test_argparse_color(self):
         # Arrange: create a parser with a bit of everything
         parser = argparse.ArgumentParser(