diff --git a/app/models/activity_pub/activity/create.rb b/app/models/activity_pub/activity/create.rb
index 4acafaf2..9cd32559 100644
--- a/app/models/activity_pub/activity/create.rb
+++ b/app/models/activity_pub/activity/create.rb
@@ -1,7 +1,7 @@
 # frozen_string_literal: true
 
 class ActivityPub
-  module Activity
+  class Activity
     class Create < ActivityPub::Activity; end
   end
 end
diff --git a/app/models/activity_pub/activity/delete.rb b/app/models/activity_pub/activity/delete.rb
index 2973f730..7080375e 100644
--- a/app/models/activity_pub/activity/delete.rb
+++ b/app/models/activity_pub/activity/delete.rb
@@ -1,7 +1,7 @@
 # frozen_string_literal: true
 
 class ActivityPub
-  module Activity
+  class Activity
     class Delete < ActivityPub::Activity
       # Si estamos eliminando el objeto, tenemos que vaciar su contenido y
       # cambiar el estado a borrado
diff --git a/app/models/activity_pub/activity/flag.rb b/app/models/activity_pub/activity/flag.rb
index 27bbe266..ffbc374b 100644
--- a/app/models/activity_pub/activity/flag.rb
+++ b/app/models/activity_pub/activity/flag.rb
@@ -1,7 +1,7 @@
 # frozen_string_literal: true
 
 class ActivityPub
-  module Activity
+  class Activity
     class Flag < ActivityPub::Activity; end
   end
 end
diff --git a/app/models/activity_pub/activity/follow.rb b/app/models/activity_pub/activity/follow.rb
index 9e32b67d..e383490a 100644
--- a/app/models/activity_pub/activity/follow.rb
+++ b/app/models/activity_pub/activity/follow.rb
@@ -5,7 +5,7 @@
 # Una actividad de seguimiento se refiere siempre a une actore (el
 # sitio) y proviene de otre actore.
 class ActivityPub
-  module Activity
+  class Activity
     class Follow < ActivityPub::Activity; end
   end
 end
diff --git a/app/models/activity_pub/activity/generic.rb b/app/models/activity_pub/activity/generic.rb
index 89c26247..95fff3eb 100644
--- a/app/models/activity_pub/activity/generic.rb
+++ b/app/models/activity_pub/activity/generic.rb
@@ -1,7 +1,7 @@
 # frozen_string_literal: true
 
 class ActivityPub
-  module Activity
+  class Activity
     class Generic < ActivityPub::Activity; end
   end
 end
diff --git a/app/models/activity_pub/activity/undo.rb b/app/models/activity_pub/activity/undo.rb
index 98233af9..41fb5e51 100644
--- a/app/models/activity_pub/activity/undo.rb
+++ b/app/models/activity_pub/activity/undo.rb
@@ -5,7 +5,7 @@
 # Deshace una actividad, dependiendo de la actividad a la que se
 # refiere.
 class ActivityPub
-  module Activity
+  class Activity
     class Undo < ActivityPub::Activity
     end
   end
diff --git a/app/models/activity_pub/activity/update.rb b/app/models/activity_pub/activity/update.rb
index 50622b93..19c95b68 100644
--- a/app/models/activity_pub/activity/update.rb
+++ b/app/models/activity_pub/activity/update.rb
@@ -1,7 +1,7 @@
 # frozen_string_literal: true
 
 class ActivityPub
-  module Activity
+  class Activity
     class Update < ActivityPub::Activity
       # Si estamos actualizando el objeto, tenemos que devolverlo a estado
       # de moderación
diff --git a/app/models/activity_pub/object/application.rb b/app/models/activity_pub/object/application.rb
index e8d8fa0e..99ac935c 100644
--- a/app/models/activity_pub/object/application.rb
+++ b/app/models/activity_pub/object/application.rb
@@ -4,7 +4,7 @@
 #
 # Una aplicación o instancia
 class ActivityPub
-  module Object
+  class Object
     class Application < ActivityPub::Object; end
   end
 end
diff --git a/app/models/activity_pub/object/article.rb b/app/models/activity_pub/object/article.rb
index 69fe371c..126ba3f1 100644
--- a/app/models/activity_pub/object/article.rb
+++ b/app/models/activity_pub/object/article.rb
@@ -4,7 +4,7 @@
 #
 # Representa artículos
 class ActivityPub
-  module Object
+  class Object
     class Article < ActivityPub::Object; end
   end
 end
diff --git a/app/models/activity_pub/object/generic.rb b/app/models/activity_pub/object/generic.rb
index c16b25c6..3e5ff719 100644
--- a/app/models/activity_pub/object/generic.rb
+++ b/app/models/activity_pub/object/generic.rb
@@ -2,7 +2,7 @@
 
 # = Generic =
 class ActivityPub
-  module Object
+  class Object
     class Generic < ActivityPub::Object; end
   end
 end
diff --git a/app/models/activity_pub/object/note.rb b/app/models/activity_pub/object/note.rb
index 06b969ab..ca113c15 100644
--- a/app/models/activity_pub/object/note.rb
+++ b/app/models/activity_pub/object/note.rb
@@ -4,7 +4,7 @@
 #
 # Representa notas, el tipo más común de objeto del Fediverso.
 class ActivityPub
-  module Object
+  class Object
     class Note < ActivityPub::Object; end
   end
 end
diff --git a/app/models/activity_pub/object/organization.rb b/app/models/activity_pub/object/organization.rb
index 31e5887d..e3385232 100644
--- a/app/models/activity_pub/object/organization.rb
+++ b/app/models/activity_pub/object/organization.rb
@@ -4,7 +4,7 @@
 #
 # Una organización
 class ActivityPub
-  module Object
+  class Object
     class Organization < ActivityPub::Object; end
   end
 end
diff --git a/app/models/activity_pub/object/person.rb b/app/models/activity_pub/object/person.rb
index fd01e515..a6a85d43 100644
--- a/app/models/activity_pub/object/person.rb
+++ b/app/models/activity_pub/object/person.rb
@@ -4,7 +4,7 @@
 #
 # Una persona, el perfil de une actore
 class ActivityPub
-  module Object
+  class Object
     class Person < ActivityPub::Object; end
   end
 end