@@ -470,6 +470,8 @@ def preferences():
470470 lang = request.cookies['language']
471471
472472 blocked_engines = []
473+
474+ resp = make_response(redirect(url_for('index')))
473475
474476 if request.method == 'GET':
475477 blocked_engines = request.cookies.get('blocked_engines', '').split(',')
@@ -502,8 +504,8 @@ def preferences():
502504 blocked_engines.append(engine_name)
503505 elif pd_name == 'theme':
504506 theme = pd if pd in themes else default_theme
505−
506− resp = make_response(redirect(url_for('index')))
507+ else:
508+ resp.set_cookie(pd_name, pd, max_age=cookie_max_age)
507509
508510 user_blocked_engines = request.cookies.get('blocked_engines', '').split(',') # noqa
509511
@@ -555,6 +557,7 @@ def preferences():
555557 autocomplete_backends=autocomplete_backends,
556558 shortcuts={y: x for x, y in engine_shortcuts.items()},
557559 themes=themes,
560+ cookies=request.cookies,
558561 theme=get_current_theme_name())
559562
560563