1 files changed, 10 insertions, 3 deletions
diff --git a/tests/test_x509_ext.py b/tests/test_x509_ext.py
index 751de08d..83145cd0 100644
--- a/tests/test_x509_ext.py
+++ b/tests/test_x509_ext.py
@@ -18,8 +18,8 @@ from cryptography.hazmat.backends.interfaces import (
 )
 from cryptography.hazmat.primitives.asymmetric import ec
 from cryptography.x509.oid import (
-    AuthorityInformationAccessOID, ExtendedKeyUsageOID,
-    ExtensionOID, NameOID
+    AuthorityInformationAccessOID, ExtendedKeyUsageOID, ExtensionOID,
+    NameOID, ObjectIdentifier
 )
 
 from .hazmat.primitives.test_ec import _skip_curve_unsupported
@@ -1861,7 +1861,7 @@ class TestExtendedKeyUsageExtension(object):
 
 class TestAccessDescription(object):
     def test_invalid_access_method(self):
-        with pytest.raises(ValueError):
+        with pytest.raises(TypeError):
             x509.AccessDescription("notanoid", x509.DNSName(u"test"))
 
     def test_invalid_access_location(self):
@@ -1870,6 +1870,13 @@ class TestAccessDescription(object):
                 AuthorityInformationAccessOID.CA_ISSUERS, "invalid"
             )
 
+    def test_valid_nonstandard_method(self):
+        ad = x509.AccessDescription(
+            ObjectIdentifier("2.999.1"),
+            x509.UniformResourceIdentifier(u"http://example.com")
+        )
+        assert ad is not None
+
     def test_repr(self):
         ad = x509.AccessDescription(
             AuthorityInformationAccessOID.OCSP,