diff --git a/tests/handlers/test_federation.py b/tests/handlers/test_federation.py
index 15b694b294..d56220f403 100644
--- a/tests/handlers/test_federation.py
+++ b/tests/handlers/test_federation.py
@@ -65,10 +65,7 @@ class FederationTestCase(unittest.HomeserverTestCase):
                             "token": invite_token,
                             "signatures": {
                                 "magic.forest": {
-                                    "ed25519:3": (
-                                        "fQpGIW1Snz+pwLZu6sTy2aHy/DYWWTspTJRPyNp0PKkymfIs"
-                                        "NffysMl6ObMMFdIJhk6g6pwlIqZ54rxo8SLmAg"
-                                    )
+                                    "ed25519:3": "fQpGIW1Snz+pwLZu6sTy2aHy/DYWWTspTJRPyNp0PKkymfIsNffysMl6ObMMFdIJhk6g6pwlIqZ54rxo8SLmAg"
                                 }
                             },
                         },