diff --git a/app/views/posts/index.haml b/app/views/posts/index.haml
index a555343b..129fc835 100644
--- a/app/views/posts/index.haml
+++ b/app/views/posts/index.haml
@@ -8,6 +8,10 @@
 
     = render 'layouts/details', summary: t('posts.filters.title') do
       %form.border.border-magenta.p-1{method: :get}
+        - @filter_params.each do |param, values|
+          - next if param == :layout
+          - [values].flatten.each do |value|
+            %input{ type: 'hidden', name: values.is_a?(Array) ? "#{param}[]" : param, value: value }
         %legend.font-weight-bold.m-0.h6= 'Tipo de contenido'
         
           
diff --git a/app/views/sites/_header.haml b/app/views/sites/_header.haml
index c4936853..779ed543 100644
--- a/app/views/sites/_header.haml
+++ b/app/views/sites/_header.haml
@@ -2,9 +2,10 @@
   %h1= site.title
   %p.lead= site.description
   %form.mb-3{ action: site_posts_path }
-    - @filter_params.each do |param, value|
-      - next if param == 'q'
-      %input{ type: 'hidden', name: param, value: value }
+    - @filter_params.each do |param, values|
+      - next if param == :q
+      - [values].flatten.each do |value|
+        %input{ type: 'hidden', name: values.is_a?(Array) ? "#{param}[]" : param, value: value }
     .form-group.flex-grow-0.m-0
       %label{for: 'q'}= t('posts.index.search')
       .input-group