diff --git a/app/views/posts/attributes/_new_array.haml b/app/views/posts/attributes/_new_array.haml
index 394345a6..692a6898 100644
--- a/app/views/posts/attributes/_new_array.haml
+++ b/app/views/posts/attributes/_new_array.haml
@@ -1,7 +1,7 @@
 -#
   Genera un listado de checkboxes entre los que se puede elegir para guardar
 :ruby
-  id = "#{base}_#{attribute}"
+  id = "#{base.gsub(/[\[\]]/, '_')}_#{attribute}".squeeze('_')
   name = "#{base}[#{attribute}][]"
   form_id = "form-#{Nanoid.generate}"
 
diff --git a/app/views/posts/attributes/_new_has_many.haml b/app/views/posts/attributes/_new_has_many.haml
index 16d68322..48230759 100644
--- a/app/views/posts/attributes/_new_has_many.haml
+++ b/app/views/posts/attributes/_new_has_many.haml
@@ -8,7 +8,7 @@
   del formulario principal porque no se pueden anidar.
 
 :ruby
-  id = "#{base}_#{attribute}"
+  id = "#{base.gsub(/[\[\]]/, '_')}_#{attribute}".squeeze('_')
   name = "#{base}[#{attribute}][]"
   form_id = "form-#{Nanoid.generate}"
   modal_id = "modal-#{Nanoid.generate}"
diff --git a/app/views/posts/attributes/_new_predefined_array.haml b/app/views/posts/attributes/_new_predefined_array.haml
index 5203c12b..218a2cc2 100644
--- a/app/views/posts/attributes/_new_predefined_array.haml
+++ b/app/views/posts/attributes/_new_predefined_array.haml
@@ -3,7 +3,8 @@
   guardar, pero no se pueden agregar nuevos.
 
 :ruby
-  id = "#{base}_#{attribute}"
+  # @todo Convertir en un helper
+  id = "#{base.gsub(/[\[\]]/, '_')}_#{attribute}".squeeze('_')
   name = "#{base}[#{attribute}][]"
   form_id = "form-#{Nanoid.generate}"