diff --git a/NEWS b/NEWS
index ee840f1ce..cedb5af62 100644
--- a/NEWS
+++ b/NEWS
@@ -7,6 +7,9 @@
 
  * Add a basic ``porcelain.clean``. (Lane Barlow, #398)
 
+ * Fix output format of ``porcelain.diff`` to match that of
+   C Git. (Boris Feld)
+
 0.19.11	2019-02-07
 
  IMPROVEMENTS
diff --git a/dulwich/tests/compat/__init__.py b/dulwich/tests/compat/__init__.py
index 5d8eff96a..59d2a5c1c 100644
--- a/dulwich/tests/compat/__init__.py
+++ b/dulwich/tests/compat/__init__.py
@@ -27,6 +27,7 @@ def test_suite():
     names = [
         'client',
         'pack',
+        'patch',
         'repository',
         'server',
         'utils',
diff --git a/dulwich/tests/compat/test_patch.py b/dulwich/tests/compat/test_patch.py
index 82c08fa5e..085013e0a 100644
--- a/dulwich/tests/compat/test_patch.py
+++ b/dulwich/tests/compat/test_patch.py
@@ -28,15 +28,13 @@
 from dulwich.repo import (
     Repo,
     )
-from dulwich.tests import (
-    TestCase,
-    )
 from dulwich.tests.compat.utils import (
+    CompatTestCase,
     run_git_or_fail,
     )
 
 
-class CompatPatchTestCase(TestCase):
+class CompatPatchTestCase(CompatTestCase):
 
     def setUp(self):
         super(CompatPatchTestCase, self).setUp()