diff --git a/server/src/apub/comment.rs b/server/src/apub/comment.rs
index 65dd3c19a..823b9d6ae 100644
--- a/server/src/apub/comment.rs
+++ b/server/src/apub/comment.rs
@@ -223,6 +223,7 @@ impl ApubObjectType for Comment {
       .set_actor_xsd_any_uri(creator.actor_id.to_owned())?
       .set_object_base_box(note)?;
 
+    // TODO
     // Undo that fake activity
     let undo_id = format!("{}/undo/delete/{}", self.ap_id, uuid::Uuid::new_v4());
     let mut undo = Undo::default();
diff --git a/server/src/apub/community.rs b/server/src/apub/community.rs
index c4d9bf839..3a1dccb27 100644
--- a/server/src/apub/community.rs
+++ b/server/src/apub/community.rs
@@ -1,5 +1,4 @@
 use super::*;
-use activitystreams::actor::kind::GroupType;
 
 #[derive(Deserialize)]
 pub struct CommunityQuery {
@@ -149,6 +148,7 @@ impl ActorType for Community {
       .set_actor_xsd_any_uri(creator.actor_id.to_owned())?
       .set_object_base_box(group)?;
 
+    // TODO
     // Undo that fake activity
     let undo_id = format!("{}/undo/delete/{}", self.actor_id, uuid::Uuid::new_v4());
     let mut undo = Undo::default();
diff --git a/server/src/apub/mod.rs b/server/src/apub/mod.rs
index 1d8605025..5b65411a3 100644
--- a/server/src/apub/mod.rs
+++ b/server/src/apub/mod.rs
@@ -14,7 +14,7 @@ use crate::websocket::server::SendCommunityRoomMessage;
 use activitystreams::object::kind::{NoteType, PageType};
 use activitystreams::{
   activity::{Accept, Create, Delete, Dislike, Follow, Like, Undo, Update},
-  actor::{properties::ApActorProperties, Actor, Group, Person},
+  actor::{kind::GroupType, properties::ApActorProperties, Actor, Group, Person},
   collection::UnorderedCollection,
   context,
   endpoint::EndpointProperties,
@@ -158,6 +158,7 @@ pub trait ToApub {
   fn to_tombstone(&self) -> Result<Tombstone, Error>;
 }
 
+/// Updated is actually the deletion time
 fn create_tombstone(
   deleted: bool,
   object_id: &str,
diff --git a/server/src/apub/post.rs b/server/src/apub/post.rs
index 5a7383c0e..c01283fcc 100644
--- a/server/src/apub/post.rs
+++ b/server/src/apub/post.rs
@@ -230,6 +230,7 @@ impl ApubObjectType for Post {
       .set_actor_xsd_any_uri(creator.actor_id.to_owned())?
       .set_object_base_box(page)?;
 
+    // TODO
     // Undo that fake activity
     let undo_id = format!("{}/undo/delete/{}", self.ap_id, uuid::Uuid::new_v4());
     let mut undo = Undo::default();