diff --git a/src/allmydata/test/web/test_introducer.py b/src/allmydata/test/web/test_introducer.py
index b1bc69f17..ba0a5beb9 100644
--- a/src/allmydata/test/web/test_introducer.py
+++ b/src/allmydata/test/web/test_introducer.py
@@ -238,4 +238,6 @@ class IntroducerRootTests(SyncTestCase):
             u"subscription_summary": {"arbitrary": 2},
             u"announcement_summary": {"arbitrary": 1},
         }
-        self.assertThat(response, succeeded(AfterPreprocessing(json.loads, Equals(expected)))
+        self.assertThat(
+            response,
+            succeeded(AfterPreprocessing(json.loads, Equals(expected))))