diff --git a/app/lib/pundit/nil_policy_error.rb b/app/lib/pundit/nil_policy_error.rb
new file mode 100644
index 0000000..d4e7e23
--- /dev/null
+++ b/app/lib/pundit/nil_policy_error.rb
@@ -0,0 +1,6 @@
+# frozen_string_literal: true
+
+# La excepción para capturar un recurso no encontrado y mostrar un 404
+module Pundit
+  class NilPolicyError < RuntimeError; end
+end
diff --git a/app/policies/nil_class_policy.rb b/app/policies/nil_class_policy.rb
index ef84895..7d890c7 100644
--- a/app/policies/nil_class_policy.rb
+++ b/app/policies/nil_class_policy.rb
@@ -6,8 +6,6 @@
 # @see app/controllers/application_controller.rb
 # @see app/controllers/posts_controller.rb
 # @see app/controllers/site_controller.rb
-class Pundit::NilPolicyError < RuntimeError; end
-
 class NilClassPolicy
   def initialize(_, _)
     raise Pundit::NilPolicyError