diff --git a/app/controllers/site_controller.rb b/app/controllers/site_controller.rb
index b10de37983..42f0416628 100644
--- a/app/controllers/site_controller.rb
+++ b/app/controllers/site_controller.rb
@@ -18,7 +18,7 @@ def index
       cookies["_osm_totp_token"] = {
         :value => ROTP::TOTP.new(TOTP_KEY, :interval => 3600).now,
         :domain => ".openstreetmap.org",
-        :expires => 1.day.from_now
+        :expires => 1.hour.from_now
       }
     end
   end