diff --git a/phasecalculator/test/iotest/phasetransferxmlcreatortest.py b/phasecalculator/test/iotest/phasetransferxmlcreatortest.py
index e301282614fbcb9905375b59c61613be1ac762e9..60441789c2b94980d6903a5c4dbbd084ffc4a9c9 100755
--- a/phasecalculator/test/iotest/phasetransferxmlcreatortest.py
+++ b/phasecalculator/test/iotest/phasetransferxmlcreatortest.py
@@ -32,7 +32,7 @@ LOGGER = logging.getLogger(__name__)
 LOGGER.setLevel(logging.WARN)
 
 class PhasetransferXMLCreatorTestCase(unittest.TestCase):
-    
+    """Test case for phase transfer XML creator methods."""
     def setUp(self):
         """Set up for tests.