diff --git a/tests/unit/test_term_set.py b/tests/unit/test_term_set.py
index 070825f80..8e28eafae 100644
--- a/tests/unit/test_term_set.py
+++ b/tests/unit/test_term_set.py
@@ -184,5 +184,5 @@ def test_wrapper_next(self):
         data_obj = VectorData(name='species', description='...', data=self.wrapped_list)
         data_obj.extend(['Mus musculus'])
         it = iter(data_obj.data)
-        self.assertEqual(next(it), "Homo sapiens"))
-        self.assertEqual(next(it), "Mus musculus"))
+        self.assertEqual(next(it), "Homo sapiens")
+        self.assertEqual(next(it), "Mus musculus")