2 files changed, 6 insertions, 6 deletions
diff --git a/synapse/rest/client/v1/login.py b/synapse/rest/client/v1/login.py
index 42e709ec14..f6be5f1020 100644
--- a/synapse/rest/client/v1/login.py
+++ b/synapse/rest/client/v1/login.py
@@ -14,7 +14,7 @@
 
 import logging
 import re
-from typing import TYPE_CHECKING, Awaitable, Callable, Dict, Optional
+from typing import TYPE_CHECKING, Awaitable, Callable, Dict, List, Optional
 
 from synapse.api.errors import Codes, LoginError, SynapseError
 from synapse.api.ratelimiting import Ratelimiter
@@ -25,6 +25,7 @@ from synapse.http import get_request_uri
 from synapse.http.server import HttpServer, finish_request
 from synapse.http.servlet import (
     RestServlet,
+    parse_bytes_from_args,
     parse_json_object_from_request,
     parse_string,
 )
@@ -437,9 +438,8 @@ class SsoRedirectServlet(RestServlet):
             finish_request(request)
             return
 
-        client_redirect_url = parse_string(
-            request, "redirectUrl", required=True, encoding=None
-        )
+        args = request.args  # type: Dict[bytes, List[bytes]]  # type: ignore
+        client_redirect_url = parse_bytes_from_args(args, "redirectUrl", required=True)
         sso_url = await self._sso_handler.handle_redirect_request(
             request,
             client_redirect_url,
diff --git a/synapse/rest/client/v1/room.py b/synapse/rest/client/v1/room.py
index 5a9c27f75f..122105854a 100644
--- a/synapse/rest/client/v1/room.py
+++ b/synapse/rest/client/v1/room.py
@@ -537,7 +537,7 @@ class RoomMessageListRestServlet(RestServlet):
             self.store, request, default_limit=10
         )
         as_client_event = b"raw" not in request.args
-        filter_str = parse_string(request, b"filter", encoding="utf-8")
+        filter_str = parse_string(request, "filter", encoding="utf-8")
         if filter_str:
             filter_json = urlparse.unquote(filter_str)
             event_filter = Filter(
@@ -652,7 +652,7 @@ class RoomEventContextServlet(RestServlet):
         limit = parse_integer(request, "limit", default=10)
 
         # picking the API shape for symmetry with /messages
-        filter_str = parse_string(request, b"filter", encoding="utf-8")
+        filter_str = parse_string(request, "filter", encoding="utf-8")
         if filter_str:
             filter_json = urlparse.unquote(filter_str)
             event_filter = Filter(