1 files changed, 1 insertions, 0 deletions
diff --git a/tests/rest/client/v2_alpha/test_register.py b/tests/rest/client/v2_alpha/test_register.py
index 2fc3a60fc5..98c3887bbf 100644
--- a/tests/rest/client/v2_alpha/test_register.py
+++ b/tests/rest/client/v2_alpha/test_register.py
@@ -55,6 +55,7 @@ class RegisterRestServletTestCase(unittest.HomeserverTestCase):
             self.hs.config.server_name,
             id="1234",
             namespaces={"users": [{"regex": r"@as_user.*", "exclusive": True}]},
+            sender="@as:test",
         )
 
         self.hs.get_datastore().services_cache.append(appservice)