1 files changed, 2 insertions, 0 deletions
diff --git a/tests/handlers/test_oauth_delegation.py b/tests/handlers/test_oauth_delegation.py
index 9387d07de8..036c539db2 100644
--- a/tests/handlers/test_oauth_delegation.py
+++ b/tests/handlers/test_oauth_delegation.py
@@ -541,6 +541,8 @@ class MSC3861OAuthDelegation(HomeserverTestCase):
 
         self.assertEqual(channel.code, 200, channel.json_body)
 
+        # Try uploading *different* keys; it should cause a 501 error.
+        keys_upload_body = self.make_device_keys(USER_ID, DEVICE)
         channel = self.make_request(
             "POST",
             "/_matrix/client/v3/keys/device_signing/upload",