1 files changed, 1 insertions, 1 deletions
diff --git a/synapse/crypto/context_factory.py b/synapse/crypto/context_factory.py
index 14b21796d9..4ca13011e5 100644
--- a/synapse/crypto/context_factory.py
+++ b/synapse/crypto/context_factory.py
@@ -219,7 +219,7 @@ class SSLClientConnectionCreator:
         # ... and we also gut-wrench a '_synapse_tls_verifier' attribute into the
         # tls_protocol so that the SSL context's info callback has something to
         # call to do the cert verification.
-        setattr(tls_protocol, "_synapse_tls_verifier", self._verifier)
+        tls_protocol._synapse_tls_verifier = self._verifier
         return connection