diff --git a/app/views/cards/display/perma/_tags.html.erb b/app/views/cards/display/perma/_tags.html.erb
index 527c579c5..058ded56f 100644
--- a/app/views/cards/display/perma/_tags.html.erb
+++ b/app/views/cards/display/perma/_tags.html.erb
@@ -12,7 +12,7 @@
   </div>
 
   <div class="position-relative" data-controller="dialog" data-action="keydown.esc->dialog#close click@document->dialog#closeOnClickOutside" <%= "hidden" if card.closed? %>>
-    <button class="tag-picker__button btn card__hide-on-index" data-action="click->dialog#open:stop" style="--btn-background: var(--card-bg-color);">
+    <button class="tag-picker__button btn card__hide-on-index tooltip" data-action="click->dialog#open:stop" style="--btn-background: var(--card-bg-color);">
       <%= icon_tag "tag" %>
       <span class="for-screen-reader">Add a tag</span>
     </button>