diff --git a/test/tests/test_01_basic.py b/test/tests/test_01_basic.py
index 63a1bc9..a1147c0 100644
--- a/test/tests/test_01_basic.py
+++ b/test/tests/test_01_basic.py
@@ -140,6 +140,7 @@ class TestBasicFunctions(unittest.TestCase):
         self.assertEqual(res, "")
         OLITestLib.delete_maildir('INBOX.OLItest')
         code, res = OLITestLib.run_OLI()
+        self.assertEqual(res, "")
         boxes, mails = OLITestLib.count_maildir_mails('')
         self.assertTrue((boxes, mails)==(0,0), msg="Expected 0 folders and 0 "
             "mails, but sync led to {} folders and {} mails".format(