diff --git a/app/views/topics/show.html.erb b/app/views/topics/show.html.erb
index 2c669554f62..6841bb4c2b8 100644
--- a/app/views/topics/show.html.erb
+++ b/app/views/topics/show.html.erb
@@ -23,5 +23,5 @@
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 <% content_for :head do %>
-  <%= auto_discovery_link_tag(@topic_view, {action: :feed, format: :rss}, title: "RSS feed of '#{@topic_view.title}'") %>
+  <%= auto_discovery_link_tag(@topic_view, {action: :feed, format: :rss}, title: "RSS feed of '#{@topic_view.title}'", type: 'application/rss+xml') %>
 <% end %>