diff --git a/Lib/test/test_email/test_email.py b/Lib/test/test_email/test_email.py
--- a/Lib/test/test_email/test_email.py
+++ b/Lib/test/test_email/test_email.py
@@ -2783,6 +2783,15 @@
         self.assertEqual(('', 'merwok.wok.wok@xample.com'),
             utils.parseaddr('merwok. wok .  wok@xample.com'))
 
+    def test_formataddr_does_not_quote_parens_in_quoted_string(self):
+        addr = ("'mingsvv1@gmail.com' (mingsvv1@gmail.com)",
+                'mingsvv1@gmail.com')
+        addrstr = ('"\'mingsvv1@gmail.com\' '
+                            '(mingsvv1@gmail.com)" <mingsvv1@gmail.com>')
+        self.assertEqual(utils.parseaddr(addrstr), addr)
+        self.assertEqual(utils.formataddr(addr), addrstr)
+
+
     def test_multiline_from_comment(self):
         x = """\
 Foo