diff --git a/plume-models/src/likes.rs b/plume-models/src/likes.rs
index 9c119177..c372b885 100644
--- a/plume-models/src/likes.rs
+++ b/plume-models/src/likes.rs
@@ -2,13 +2,18 @@ use crate::{
     db_conn::DbConn, instance::Instance, notifications::*, posts::Post, schema::likes, timeline::*,
     users::User, Connection, Error, Result, CONFIG,
 };
-use activitypub::activity;
+use activitystreams::{
+    activity::{self, ActivityExt, ActorAndObjectRefExt},
+    base::AnyBase,
+    primitives::OneOrMany,
+    uri as as_uri,
+};
+
 use chrono::NaiveDateTime;
 use diesel::{self, ExpressionMethods, QueryDsl, RunQueryDsl};
 use plume_common::activity_pub::{
     inbox::{AsActor, AsObject, FromId},
     sign::Signer,
-    Id, IntoId, PUBLIC_VISIBILITY,
 };
 
 #[derive(Clone, Queryable, Identifiable)]
@@ -35,17 +40,21 @@ impl Like {
     find_by!(likes, find_by_user_on_post, user_id as i32, post_id as i32);
 
     pub fn to_activity(&self, conn: &Connection) -> Result<activity::Like> {
-        let mut act = activity::Like::default();
-        act.like_props
-            .set_actor_link(User::get(conn, self.user_id)?.into_id())?;
-        act.like_props
-            .set_object_link(Post::get(conn, self.post_id)?.into_id())?;
-        act.object_props
-            .set_to_link_vec(vec![Id::new(PUBLIC_VISIBILITY.to_string())])?;
-        act.object_props.set_cc_link_vec(vec![Id::new(
-            User::get(conn, self.user_id)?.followers_endpoint,
-        )])?;
-        act.object_props.set_id_string(self.ap_url.clone())?;
+        let act = activity::Like::new(
+            as_uri!(User::get(conn, self.user_id)?.ap_url), // FIXME: use to_activity()
+            as_uri!(Post::get(conn, self.post_id)?.ap_url), // FIXME: use to_activity()
+        );
+        // let mut act = activity::Like::default();
+        // act.like_props
+        //     .set_actor_link(User::get(conn, self.user_id)?.into_id())?;
+        // act.like_props
+        //     .set_object_link(Post::get(conn, self.post_id)?.into_id())?;
+        // act.object_props
+        //     .set_to_link_vec(vec![Id::new(PUBLIC_VISIBILITY.to_string())])?;
+        // act.object_props.set_cc_link_vec(vec![Id::new(
+        //     User::get(conn, self.user_id)?.followers_endpoint,
+        // )])?;
+        // act.object_props.set_id_string(self.ap_url.clone())?;
 
         Ok(act)
     }
@@ -68,17 +77,27 @@ impl Like {
     }
 
     pub fn build_undo(&self, conn: &Connection) -> Result<activity::Undo> {
-        let mut act = activity::Undo::default();
-        act.undo_props
-            .set_actor_link(User::get(conn, self.user_id)?.into_id())?;
-        act.undo_props.set_object_object(self.to_activity(conn)?)?;
-        act.object_props
-            .set_id_string(format!("{}#delete", self.ap_url))?;
-        act.object_props
-            .set_to_link_vec(vec![Id::new(PUBLIC_VISIBILITY.to_string())])?;
-        act.object_props.set_cc_link_vec(vec![Id::new(
-            User::get(conn, self.user_id)?.followers_endpoint,
-        )])?;
+        let like = self.to_activity(conn)?;
+        let act = activity::Undo::new::<url::Url, OneOrMany<AnyBase>>(
+            *like
+                .actor()
+                .expect("authorized domain")
+                .as_single_id()
+                .expect("exists and only"),
+            *like.result().expect("exists"),
+        );
+
+        // let mut act = activity::Undo::default();
+        // act.undo_props
+        //     .set_actor_link(User::get(conn, self.user_id)?.into_id())?;
+        // act.undo_props.set_object_object(self.to_activity(conn)?)?;
+        // act.object_props
+        //     .set_id_string(format!("{}#delete", self.ap_url))?;
+        // act.object_props
+        //     .set_to_link_vec(vec![Id::new(PUBLIC_VISIBILITY.to_string())])?;
+        // act.object_props.set_cc_link_vec(vec![Id::new(
+        //     User::get(conn, self.user_id)?.followers_endpoint,
+        // )])?;
 
         Ok(act)
     }
@@ -118,7 +137,7 @@ impl FromId<DbConn> for Like {
             NewLike {
                 post_id: Post::from_id(
                     conn,
-                    &act.like_props.object_link::<Id>()?,
+                    &act.object().as_single_id().expect("exists").as_str(),
                     None,
                     CONFIG.proxy(),
                 )
@@ -126,13 +145,17 @@ impl FromId<DbConn> for Like {
                 .id,
                 user_id: User::from_id(
                     conn,
-                    &act.like_props.actor_link::<Id>()?,
+                    &act.actor()
+                        .expect("authorized domain")
+                        .as_single_id()
+                        .expect("exists")
+                        .as_str(),
                     None,
                     CONFIG.proxy(),
                 )
                 .map_err(|(_, e)| e)?
                 .id,
-                ap_url: act.object_props.id_string()?,
+                ap_url: act.object().as_single_id().expect("exists").to_string(),
             },
         )?;
         res.notify(conn)?;