diff --git a/config/initializers/omniauth.rb b/config/initializers/omniauth.rb
index 179fb77..67666d5 100644
--- a/config/initializers/omniauth.rb
+++ b/config/initializers/omniauth.rb
@@ -8,7 +8,7 @@ Rails.application.config.middleware.use OmniAuth::Builder do
     client_options: {
       identifier: Rails.application.config.hack_club_auth.client_id,
       secret: Rails.application.config.hack_club_auth.client_secret,
-      redirect_uri: ->(env) { "#{env['rack.url_scheme']}://#{env['HTTP_HOST']}/back_office/auth/hackclub/callback" }
+      redirect_uri: ENV.fetch("HACKCLUB_REDIRECT_URI", "http://localhost:3000/back_office/auth/hackclub/callback")
     },
     scope: %i[openid profile email slack_id]
 end