1 files changed, 1 insertions, 1 deletions
diff --git a/synapse/http/__init__.py b/synapse/http/__init__.py
index ed4671b7de..578fc48ef4 100644
--- a/synapse/http/__init__.py
+++ b/synapse/http/__init__.py
@@ -69,7 +69,7 @@ def _get_requested_host(request: IRequest) -> bytes:
         return hostname
 
     # no Host header, use the address/port that the request arrived on
-    host = request.getHost()  # type: Union[address.IPv4Address, address.IPv6Address]
+    host: Union[address.IPv4Address, address.IPv6Address] = request.getHost()
 
     hostname = host.host.encode("ascii")