diff --git a/synapse/module_api/__init__.py b/synapse/module_api/__init__.py
index dd4d18545f06..4251617ce2f1 100644
--- a/synapse/module_api/__init__.py
+++ b/synapse/module_api/__init__.py
@@ -1461,10 +1461,12 @@ async def lookup_room_alias(self, room_alias: str) -> Tuple[str, List[str]]:
 
         Args:
             room_alias: The alias to look up.
+
         Returns:
             A tuple of:
                 The room ID (str).
                 Hosts likely to be participating in the room ([str]).
+
         Raises:
             SynapseError if room alias is invalid or could not be found.
         """