diff --git a/tests/test_x509_ext.py b/tests/test_x509_ext.py
index 7320b94..c1d51e5 100644
--- a/tests/test_x509_ext.py
+++ b/tests/test_x509_ext.py
@@ -917,7 +917,7 @@
         ip = san.get_values_for_type(x509.IPAddress)
         dirname = san.get_values_for_type(x509.DirectoryName)
         assert [u"user@cryptography.io"] == rfc822_name
-        assert ["https://cryptography.io"] == uri
+        assert [u"https://cryptography.io"] == uri
         assert [u"cryptography.io"] == dns
         assert [
             x509.Name([