diff --git a/assets/javascripts/discourse/templates/subscribe/show.hbs b/assets/javascripts/discourse/templates/subscribe/show.hbs
index 19b2706..8d93e34 100644
--- a/assets/javascripts/discourse/templates/subscribe/show.hbs
+++ b/assets/javascripts/discourse/templates/subscribe/show.hbs
@@ -34,7 +34,7 @@
           {{input
             type="text"
             name="promo_code"
-            placeholderKey="discourse_subscriptions.subscribe.promo_code"
+            placeholder=(i18n "discourse_subscriptions.subscribe.promo_code")
             value=promoCode
           }}
         </div>