diff --git a/synapse/federation/transport/client.py b/synapse/federation/transport/client.py

index 2b138526ba..db45c7826c 100644
--- a/synapse/federation/transport/client.py
+++ b/synapse/federation/transport/client.py
@@ -248,12 +248,22 @@ class TransportLayerClient(object):
 
     @defer.inlineCallbacks
     @log_function
-    def get_public_rooms(self, remote_server):
+    def get_public_rooms(self, remote_server, limit, since_token,
+                         search_filter=None):
         path = PREFIX + "/publicRooms"
 
+        args = {}
+        if limit:
+            args["limit"] = [str(limit)]
+        if since_token:
+            args["since"] = [since_token]
+
+        # TODO(erikj): Actually send the search_filter across federation.
+
         response = yield self.client.get_json(
             destination=remote_server,
             path=path,
+            args=args,
         )
 
         defer.returnValue(response)