diff --git a/synapse/http/client.py b/synapse/http/client.py
index 6c89b2098..902ae7a20 100644
--- a/synapse/http/client.py
+++ b/synapse/http/client.py
@@ -462,5 +462,8 @@ class InsecureInterceptableContextFactory(ssl.ContextFactory):
         self._context = SSL.Context(SSL.SSLv23_METHOD)
         self._context.set_verify(VERIFY_NONE, lambda *_: None)
 
-    def getContext(self, hostname, port):
+    def getContext(self, hostname=None, port=None):
         return self._context
+
+    def creatorForNetloc(self, hostname, port):
+        return self