Fix None guard in config.server.is_threepid_reserved

1 files changed, 3 insertions, 1 deletions

diff --git a/tests/utils.py b/tests/utils.py

index 08d6faa0a6..df73c539c3 100644
--- a/tests/utils.py
+++ b/tests/utils.py
@@ -154,7 +154,9 @@ def default_config(name):
     config.update_user_directory = False
 
     def is_threepid_reserved(threepid):
-        return ServerConfig.is_threepid_reserved(config, threepid)
+        return ServerConfig.is_threepid_reserved(
+            config.mau_limits_reserved_threepids, threepid
+        )
 
     config.is_threepid_reserved.side_effect = is_threepid_reserved