diff --git a/app/controllers/contests_controller.rb b/app/controllers/contests_controller.rb
index a9e829a..72fa5ef 100644
--- a/app/controllers/contests_controller.rb
+++ b/app/controllers/contests_controller.rb
@@ -81,7 +81,11 @@ class ContestsController < ApplicationController
     filter_contestants_per_category
     @puzzles = @contest.puzzles.order(:id)
     @action_name = t("helpers.buttons.refresh")
-    @action_path = "/public/#{@contest.friendly_id}"
+    if params.key?(:category)
+      @action_path = "/public/#{@contest.friendly_id}?category=#{params[:category]}"
+    else
+      @action_path = "/public/#{@contest.friendly_id}"
+    end
     render :scoreboard
   end
 
diff --git a/app/views/contests/scoreboard.html.slim b/app/views/contests/scoreboard.html.slim
index b3e4960..55a1e51 100644
--- a/app/views/contests/scoreboard.html.slim
+++ b/app/views/contests/scoreboard.html.slim
@@ -1,10 +1,3 @@
-javascript:
-  function refresh() {
-    const el = document.querySelector('input[type="checkbox"]');
-    if (el.checked) location.replace("/public/#{@contest.friendly_id}?refresh=1")
-    setTimeout(refresh, 5000);
-  }
-
 css:
   @media (max-width: 800px) {
     a.btn { display: none; }