diff --git a/tests.py b/tests.py
index 55f71a5..cebae39 100644
--- a/tests.py
+++ b/tests.py
@@ -10,8 +10,8 @@
 class TestMega(unittest.TestCase):    
     def setUp(self):
         unittest.TestCase.setUp(self)
-        self.email = os.environ.get('MEGAEMAIL') or sys.argv[0]
-        self.password = os.environ.get('MEGAPASSWORD') or sys.argv[1]
+        self._email = os.environ.get('MEGAEMAIL') or sys.argv[0]
+        self._password = os.environ.get('MEGAPASSWORD') or sys.argv[1]
 
     def _check_file_exists(self, file_name, files):
         uploaded = False