diff --git a/letsencrypt/client/tests/apache/obj_test.py b/letsencrypt/client/tests/apache/obj_test.py
index f78e83bb4..0dccd3afb 100644
--- a/letsencrypt/client/tests/apache/obj_test.py
+++ b/letsencrypt/client/tests/apache/obj_test.py
@@ -64,3 +64,7 @@ class VirtualHostTest(unittest.TestCase):
         self.assertEqual(vhost1b, self.vhost1)
         self.assertEqual(str(vhost1b), str(self.vhost1))
         self.assertNotEqual(vhost1b, 1234)
+
+
+if __name__ == "__main__":
+    unittest.main()
diff --git a/letsencrypt/client/tests/challenge_util_test.py b/letsencrypt/client/tests/challenge_util_test.py
index a8d40630e..97f341b0d 100644
--- a/letsencrypt/client/tests/challenge_util_test.py
+++ b/letsencrypt/client/tests/challenge_util_test.py
@@ -49,3 +49,7 @@ class DvsniGenCertTest(unittest.TestCase):
     def _call(cls, name, r_b64, nonce, key):
         from letsencrypt.client.challenge_util import dvsni_gen_cert
         return dvsni_gen_cert(name, r_b64, nonce, key)
+
+
+if __name__ == "__main__":
+    unittest.main()