1 files changed, 1 insertions, 1 deletions
diff --git a/synapse/http/endpoint.py b/synapse/http/endpoint.py
index d91500b07d..a6ebe23567 100644
--- a/synapse/http/endpoint.py
+++ b/synapse/http/endpoint.py
@@ -53,7 +53,7 @@ def matrix_endpoint(reactor, destination, ssl_context_factory=None,
         default_port = 8080
     else:
         transport_endpoint = SSL4ClientEndpoint
-        endpoint_kw_args.update(ssl_context_factory=ssl_context_factory)
+        endpoint_kw_args.update(sslContextFactory=ssl_context_factory)
         default_port = 443
 
     if port is None: