diff --git a/app/views/cards/container/_closure.html.erb b/app/views/cards/container/_closure.html.erb
index c40da47b9..29260f45d 100644
--- a/app/views/cards/container/_closure.html.erb
+++ b/app/views/cards/container/_closure.html.erb
@@ -7,8 +7,11 @@
       <% end %>
     </div>
   <% else %>
-    <%= button_to card_closure_path(card), class: "btn borderless" do %>
+    <%= button_to card_closure_path(card), class: "btn borderless",
+        data: { form_target: "submit" },
+        form: { data: { controller: "form", action: "keydown.d@document->form#submit" } } do %>
       <span class="overflow-ellipsis">Mark as Done</span>
+      <kbd class="txt-x-small hide-on-touch">d</kbd>
     <% end %>
 
     <div id="<%= dom_id(card, :closure_notice) %>">