diff --git a/app/views/cards/display/_preview.html.erb b/app/views/cards/display/_preview.html.erb
index 7d673308c..e1ed5b946 100644
--- a/app/views/cards/display/_preview.html.erb
+++ b/app/views/cards/display/_preview.html.erb
@@ -1,4 +1,4 @@
-<% cache [ card ] do %>
+<% cache card do %>
<%= card_article_tag card, class: "card" do %>