diff --git a/tractor/_discovery.py b/tractor/_discovery.py
index bcfcc84..bac4110 100644
--- a/tractor/_discovery.py
+++ b/tractor/_discovery.py
@@ -44,7 +44,7 @@ async def get_arbiter(
 @asynccontextmanager
 async def get_root(
     **kwargs,
-) -> typing.AsyncGenerator[Union[Portal, LocalPortal], None]:
+) -> typing.AsyncGenerator[Portal, None]:
 
     host, port = _runtime_vars['_root_mailbox']
     assert host is not None