diff --git a/apitools/base/py/encoding_test.py b/apitools/base/py/encoding_test.py
index caf3ebb1..de9ba216 100644
--- a/apitools/base/py/encoding_test.py
+++ b/apitools/base/py/encoding_test.py
@@ -477,8 +477,8 @@ def testUnknownNestedRoundtrip(self):
                          json.loads(encoding.MessageToJson(message)))
 
     def testUnknownEnumNestedRoundtrip(self):
-        json_with_typo = ('{"outer_key": {"key_one": {"field_one": "VALUE_OEN",'
-                          ' "field_two": "VALUE_OEN"}}}')
+        json_with_typo = ('{"outer_key": {"key_one": {"field_one": '
+                          '"VALUE_OEN", "field_two": "VALUE_OEN"}}}')
         msg = encoding.JsonToMessage(NestedAdditionalPropertiesWithEnumMessage,
                                      json_with_typo)
         self.assertEqual(json.loads(json_with_typo),