diff --git a/app/views/posts/show.haml b/app/views/posts/show.haml
index 32f3951..1c0324a 100644
--- a/app/views/posts/show.haml
+++ b/app/views/posts/show.haml
@@ -25,8 +25,8 @@
 .row
   .col
     .content{class: @post.get_front_matter(:dir)}
-      :markdown
-        #{@post.content}
+      = sanitized_markdown @post.content,
+        tags: %w[h1 h2 h3 h4 h5 h6 p a ul ol li table tr td th tbody thead tfoot em strong sup blockquote cite pre]
 
     -# Representar los datos en una tabla:
     -# Texto: tal cual en una celda
@@ -73,8 +73,8 @@
                         %td= v
               - elsif data.respond_to? :content
                 -# Contenido del artículo
-                :markdown
-                  #{data.content}
+                = sanitized_markdown data.content,
+                  tags: %w[h1 h2 h3 h4 h5 h6 p a ul ol li table tr td th tbody thead tfoot em strong sup blockquote cite pre]
               - elsif data.respond_to? :strftime
                 -# Fecha
                 = data.strftime('%F')
diff --git a/config/initializers/commonmarker.rb b/config/initializers/commonmarker.rb
deleted file mode 100644
index 4d6743f..0000000
--- a/config/initializers/commonmarker.rb
+++ /dev/null
@@ -1,17 +0,0 @@
-# frozen_string_literal: true
-
-require 'commonmarker'
-
-module Haml::Filters
-  remove_filter('Markdown') # remove the existing Markdown filter
-
-  module Markdown
-    include Haml::Filters::Base
-
-    def render(text)
-      CommonMarker.render_html(text,
-                               [:TABLE_PREFER_STYLE_ATTRIBUTES],
-                               %i[table strikethrough autolink tagfilter])
-    end
-  end
-end