diff --git a/plume-models/src/likes.rs b/plume-models/src/likes.rs
index 9a405904..cad9d1ef 100644
--- a/plume-models/src/likes.rs
+++ b/plume-models/src/likes.rs
@@ -3,7 +3,12 @@ use crate::{
     users::User, Connection, Error, Result, CONFIG,
 };
 use activitypub::activity;
-use activitystreams::{activity::Like as Like07, iri_string::types::IriString, prelude::*};
+use activitystreams::{
+    activity::{Like as Like07, Undo as Undo07},
+    base::AnyBase,
+    iri_string::types::IriString,
+    prelude::*,
+};
 use chrono::NaiveDateTime;
 use diesel::{self, ExpressionMethods, QueryDsl, RunQueryDsl};
 use plume_common::activity_pub::{
@@ -275,4 +280,35 @@ mod tests {
             Ok(())
         });
     }
+
+    #[test]
+    fn build_undo07() {
+        let conn = db();
+        conn.test_transaction::<_, Error, _>(|| {
+            let (posts, _users, _blogs) = fill_database(&conn);
+            let post = &posts[0];
+            let user = &post.get_authors(&conn)?[0];
+            let like = Like::insert(&*conn, NewLike::new(post, user))?;
+            let act = like.build_undo07(&*conn)?;
+
+            let expected = json!({
+                "actor": "https://plu.me/@/admin/",
+                "cc": ["https://plu.me/@/admin/followers"],
+                "id": "https://plu.me/@/admin/like/https://plu.me/~/BlogName/testing#delete",
+                "object": {
+                    "actor": "https://plu.me/@/admin/",
+                    "cc": ["https://plu.me/@/admin/followers"],
+                    "id": "https://plu.me/@/admin/like/https://plu.me/~/BlogName/testing",
+                    "object": "https://plu.me/~/BlogName/testing",
+                    "to": ["https://www.w3.org/ns/activitystreams#Public"],
+                    "type": "Like",
+                },
+                "to": ["https://www.w3.org/ns/activitystreams#Public"],
+                "type": "Undo",
+            });
+            assert_json_eq!(to_value(act)?, expected);
+
+            Ok(())
+        });
+    }
 }