1 files changed, 3 insertions, 1 deletions

diff --git a/server/helpers/custom-validators/activitypub/undo.ts b/server/helpers/custom-validators/activitypub/undo.ts
index a2831b0bf..f50f224fa 100644
--- a/server/helpers/custom-validators/activitypub/undo.ts
+++ b/server/helpers/custom-validators/activitypub/undo.ts
@@ -1,13 +1,15 @@
 import { isActorFollowActivityValid } from './actor'
 import { isBaseActivityValid } from './misc'
 import { isDislikeActivityValid, isLikeActivityValid } from './rate'
+import { isAnnounceActivityValid } from './announce'
 
 function isUndoActivityValid (activity: any) {
   return isBaseActivityValid(activity, 'Undo') &&
     (
       isActorFollowActivityValid(activity.object) ||
       isLikeActivityValid(activity.object) ||
-      isDislikeActivityValid(activity.object)
+      isDislikeActivityValid(activity.object) ||
+      isAnnounceActivityValid(activity.object)
     )
 }