diff --git a/zerver/tests/test_hooks.py b/zerver/tests/test_hooks.py
index 6f2ac4a039..7c7399c018 100644
--- a/zerver/tests/test_hooks.py
+++ b/zerver/tests/test_hooks.py
@@ -1475,6 +1475,7 @@ class IFTTTHookTests(WebhookTestCase):
     FIXTURE_DIR_NAME = 'ifttt'
 
     def test_ifttt_when_subject_and_body_are_correct(self):
+        # type: () -> None
         expected_subject = u"Email sent from email@email.com"
         expected_message = u"Email subject: Subject"
         self.send_and_test_stream_message('correct_subject_and_body', expected_subject, expected_message)