#20977: fix undefined name in the email module.  Patch by Rose Ames.
diff --git a/Lib/email/_header_value_parser.py b/Lib/email/_header_value_parser.py
index 3dc5502..1806cac 100644
--- a/Lib/email/_header_value_parser.py
+++ b/Lib/email/_header_value_parser.py
@@ -2897,7 +2897,7 @@
     try:
         token, value = get_token(value)
     except errors.HeaderParseError:
-        ctype.defects.append(errors.InvalidHeaderDefect(
+        disp_header.defects.append(errors.InvalidHeaderDefect(
             "Expected content disposition but found {!r}".format(value)))
         _find_mime_parameters(disp_header, value)
         return disp_header
@@ -2928,8 +2928,8 @@
     try:
         token, value = get_token(value)
     except errors.HeaderParseError:
-        ctype.defects.append(errors.InvalidHeaderDefect(
-            "Expected content trnasfer encoding but found {!r}".format(value)))
+        cte_header.defects.append(errors.InvalidHeaderDefect(
+            "Expected content transfer encoding but found {!r}".format(value)))
     else:
         cte_header.append(token)
         cte_header.cte = token.value.strip().lower()
diff --git a/Lib/test/test_email/test__header_value_parser.py b/Lib/test/test_email/test__header_value_parser.py
index 32996ca..5404d19 100644
--- a/Lib/test/test_email/test__header_value_parser.py
+++ b/Lib/test/test_email/test__header_value_parser.py
@@ -2443,6 +2443,18 @@
         self.assertEqual(str(address_list.addresses[1]),
                          str(address_list.mailboxes[2]))
 
+    def test_invalid_content_disposition(self):
+        content_disp = self._test_parse_x(
+            parser.parse_content_disposition_header,
+            ";attachment", "; attachment", ";attachment",
+            [errors.InvalidHeaderDefect]*2
+        )
+
+    def test_invalid_content_transfer_encoding(self):
+        cte = self._test_parse_x(
+            parser.parse_content_transfer_encoding_header,
+            ";foo", ";foo", ";foo", [errors.InvalidHeaderDefect]*3
+        )
 
 @parameterize
 class Test_parse_mime_version(TestParserMixin, TestEmailBase):
diff --git a/Misc/ACKS b/Misc/ACKS
index fdf89d4..87a3264 100644
--- a/Misc/ACKS
+++ b/Misc/ACKS
@@ -35,6 +35,7 @@
 Kevin Altis
 Skyler Leigh Amador
 Joe Amenta
+Rose Ames
 A. Amoroso
 Mark Anacker
 Shashwat Anand