2 files changed, 3 insertions, 1 deletions

diff --git a/server/helpers/activitypub.ts b/server/helpers/activitypub.ts
index 62d78373e..e850efe13 100644
--- a/server/helpers/activitypub.ts
+++ b/server/helpers/activitypub.ts
@@ -34,7 +34,8 @@ function activityPubContextify <T> (data: T) {
         expires: 'sc:expires',
         support: 'sc:Text',
         CacheFile: 'pt:CacheFile',
-        Infohash: 'pt:Infohash'
+        Infohash: 'pt:Infohash',
+        originallyPublishedAt: 'sc:DateTime'
       },
       {
         likes: {
diff --git a/server/helpers/custom-validators/activitypub/videos.ts b/server/helpers/custom-validators/activitypub/videos.ts
index 53ad0588d..d94333151 100644
--- a/server/helpers/custom-validators/activitypub/videos.ts
+++ b/server/helpers/custom-validators/activitypub/videos.ts
@@ -54,6 +54,7 @@ function sanitizeAndCheckVideoTorrentObject (video: any) {
     isBooleanValid(video.downloadEnabled) &&
     isDateValid(video.published) &&
     isDateValid(video.updated) &&
+    (!video.originallyPublishedAt || isDateValid(video.originallyPublishedAt)) &&
     (!video.content || isRemoteVideoContentValid(video.mediaType, video.content)) &&
     isRemoteVideoIconValid(video.icon) &&
     video.url.length !== 0 &&