diff --git a/app/views/list/list.erb b/app/views/list/list.erb
index f673ed2bbc7..21697dd1e65 100644
--- a/app/views/list/list.erb
+++ b/app/views/list/list.erb
@@ -126,7 +126,8 @@
     <link rel="next" href="<%= @list.more_topics_url -%>">
   <% end %>
 <% end %>
-
+<% else %>
+  <%= t(:crawler_content_hidden) %>
 <%- end %> <!-- include_crawler_content? -->
 
 <% if @rss %>
diff --git a/app/views/topics/show.html.erb b/app/views/topics/show.html.erb
index 5cc3387360f..d197fd33f8e 100644
--- a/app/views/topics/show.html.erb
+++ b/app/views/topics/show.html.erb
@@ -139,7 +139,9 @@
     </div>
   <% end %>
 
-  <%= build_plugin_html 'server:topic-show-after-posts-crawler' %>
+    <%= build_plugin_html 'server:topic-show-after-posts-crawler' %>
+  <% else %>
+    <%= t(:crawler_content_hidden) %>
   <% end %>
 
   <% content_for :head do %>
diff --git a/config/locales/server.en.yml b/config/locales/server.en.yml
index 5b9f189500f..87f670f4918 100644
--- a/config/locales/server.en.yml
+++ b/config/locales/server.en.yml
@@ -481,6 +481,7 @@ en:
   next_page: "next page →"
   prev_page: "← previous page"
   page_num: "Page %{num}"
+  crawler_content_hidden: "HTML content omitted because you are logged in or using a modern mobile device."
   home_title: "Home"
   topics_in_category: "Topics in the '%{category}' category"
   rss_posts_in_topic: "RSS feed of '%{topic}'"