diff --git a/app/controllers/api/v1/admin/trends/tags_controller.rb b/app/controllers/api/v1/admin/trends/tags_controller.rb
index f3c0c4b6b..e77df3021 100644
--- a/app/controllers/api/v1/admin/trends/tags_controller.rb
+++ b/app/controllers/api/v1/admin/trends/tags_controller.rb
@@ -3,6 +3,14 @@
 class Api::V1::Admin::Trends::TagsController < Api::V1::Trends::TagsController
   before_action -> { authorize_if_got_token! :'admin:read' }
 
+  def index
+    if current_user&.can?(:manage_taxonomies)
+      render json: @tags, each_serializer: REST::Admin::TagSerializer
+    else
+      super
+    end
+  end
+
   private
 
   def enabled?
diff --git a/app/javascript/mastodon/components/admin/Trends.js b/app/javascript/mastodon/components/admin/Trends.js
index 9530c2a5b..d01b8437e 100644
--- a/app/javascript/mastodon/components/admin/Trends.js
+++ b/app/javascript/mastodon/components/admin/Trends.js
@@ -50,7 +50,7 @@ export default class Trends extends React.PureComponent {
             <Hashtag
               key={hashtag.name}
               name={hashtag.name}
-              to={`/admin/tags/${hashtag.id}`}
+              to={hashtag.id === undefined ? undefined : `/admin/tags/${hashtag.id}`}
               people={hashtag.history[0].accounts * 1 + hashtag.history[1].accounts * 1}
               uses={hashtag.history[0].uses * 1 + hashtag.history[1].uses * 1}
               history={hashtag.history.reverse().map(day => day.uses)}