diff --git a/selftests/functional/test_basic.py b/selftests/functional/test_basic.py
index 6e44bcd8542c487c198d13d35908cfeb5cbf6bbf..311e0cfe3cc942ef8925f11ee8ddfa65303fa1f1 100644
--- a/selftests/functional/test_basic.py
+++ b/selftests/functional/test_basic.py
@@ -184,7 +184,7 @@ class RunnerOperationTest(unittest.TestCase):
                    'test_dir': os.path.join(base_dir, 'test'),
                    'data_dir': os.path.join(base_dir, 'data'),
                    'logs_dir': os.path.join(base_dir, 'logs')}
-        config = '[datadir.paths]'
+        config = '[datadir.paths]\n'
         for key, value in iteritems(mapping):
             if not os.path.isdir(value):
                 os.mkdir(value)