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 f50f224fa..578035893 100644
--- a/server/helpers/custom-validators/activitypub/undo.ts
+++ b/server/helpers/custom-validators/activitypub/undo.ts
@@ -2,6 +2,7 @@ import { isActorFollowActivityValid } from './actor'
 import { isBaseActivityValid } from './misc'
 import { isDislikeActivityValid, isLikeActivityValid } from './rate'
 import { isAnnounceActivityValid } from './announce'
+import { isCacheFileCreateActivityValid } from './cache-file'
 
 function isUndoActivityValid (activity: any) {
   return isBaseActivityValid(activity, 'Undo') &&
@@ -9,7 +10,8 @@ function isUndoActivityValid (activity: any) {
       isActorFollowActivityValid(activity.object) ||
       isLikeActivityValid(activity.object) ||
       isDislikeActivityValid(activity.object) ||
-      isAnnounceActivityValid(activity.object)
+      isAnnounceActivityValid(activity.object) ||
+      isCacheFileCreateActivityValid(activity.object)
     )
 }