diff --git a/railties/guides/rails_guides/textile_extensions.rb b/railties/guides/rails_guides/textile_extensions.rb
index 460dab18c3..794083b44b 100644
--- a/railties/guides/rails_guides/textile_extensions.rb
+++ b/railties/guides/rails_guides/textile_extensions.rb
@@ -31,10 +31,10 @@ module RailsGuides
     end
 
     def code(body)
-      body.gsub!(/\<(yaml|shell|ruby|erb|html|sql)\>(.*?)\<\/\1\>/m) do |m|
+      body.gsub!(%r{<(yaml|shell|ruby|erb|html|sql)>(.*?)</\1>}m) do |m|
         es = ERB::Util.h($2)
         css_class = ['erb', 'shell'].include?($1) ? 'html' : $1
-        %{<notextile><div class="code_container"><code class="#{css_class}">#{es}\n</code></div></notextile>}
+        %{<notextile><div class="code_container"><code class="#{css_class}">#{es}</code></div></notextile>}
       end
     end
   end