diff --git a/web_view.py b/web_view.py
index aeeda4a..a1c7d52 100755
--- a/web_view.py
+++ b/web_view.py
@@ -90,7 +90,8 @@ def global_user() -> None:
 def index() -> str | Response:
     """Index page."""
     if "oauth_verifier" in flask.request.args and "oauth_token" in flask.request.args:
-        return flask.redirect(flask.url_for("oauth_callback", **flask.request.args))
+        url = flask.url_for("oauth_callback", **flask.request.args)  # type: ignore
+        return flask.redirect(url)
 
     examples = load_examples()
     examples.sort(