diff --git a/app/controllers/embed_controller.rb b/app/controllers/embed_controller.rb
index f9daccb4883..3286eaead1b 100644
--- a/app/controllers/embed_controller.rb
+++ b/app/controllers/embed_controller.rb
@@ -69,7 +69,11 @@ class EmbedController < ApplicationController
       topic_embeds.each do |te|
         url = te.embed_url
         url = "#{url}#discourse-comments" unless params[:embed_url].include?(url)
-        by_url[url] = I18n.t('embed.replies', count: te.topic.posts_count - 1)
+        if te.topic.present?
+          by_url[url] = I18n.t('embed.replies', count: te.topic.posts_count - 1)
+        else
+          by_url[url] = I18n.t('embed.replies', count: 0)
+        end
       end
     end