1 files changed, 3 insertions, 1 deletions
diff --git a/tests/unittest.py b/tests/unittest.py
index 3175a3fa02..68d2586efd 100644
--- a/tests/unittest.py
+++ b/tests/unittest.py
@@ -603,7 +603,9 @@ class HomeserverTestCase(TestCase):
             user: MXID of the user to inject the membership for.
             membership: The membership type.
         """
-        event_injection.inject_member_event(self.hs, room, user, membership)
+        self.get_success(
+            event_injection.inject_member_event(self.hs, room, user, membership)
+        )
 
 
 class FederatingHomeserverTestCase(HomeserverTestCase):