1 files changed, 1 insertions, 1 deletions

diff --git a/server/helpers/custom-validators/activitypub/cache-file.ts b/server/helpers/custom-validators/activitypub/cache-file.ts
index 21d5c53ca..c5b3b4d9f 100644
--- a/server/helpers/custom-validators/activitypub/cache-file.ts
+++ b/server/helpers/custom-validators/activitypub/cache-file.ts
@@ -6,7 +6,7 @@ import { CacheFileObject } from '../../../../shared/models/activitypub/objects'
 function isCacheFileObjectValid (object: CacheFileObject) {
   return exists(object) &&
     object.type === 'CacheFile' &&
-    isDateValid(object.expires) &&
+    (object.expires === null || isDateValid(object.expires)) &&
     isActivityPubUrlValid(object.object) &&
     (isRemoteVideoUrlValid(object.url) || isPlaylistRedundancyUrlValid(object.url))
 }