1 files changed, 1 insertions, 1 deletions
diff --git a/tests/rest/client/test_retention.py b/tests/rest/client/test_retention.py
index b58452195a..fe5b536d97 100644
--- a/tests/rest/client/test_retention.py
+++ b/tests/rest/client/test_retention.py
@@ -228,7 +228,7 @@ class RetentionTestCase(unittest.HomeserverTestCase):
         self.assertIsNotNone(event)
 
         time_now = self.clock.time_msec()
-        serialized = self.get_success(self.serializer.serialize_event(event, time_now))
+        serialized = self.serializer.serialize_event(event, time_now)
 
         return serialized