1 files changed, 8 insertions, 3 deletions

diff --git a/server/models/activitypub/actor.ts b/server/models/activitypub/actor.ts
index 535ebd792..42a24b583 100644
--- a/server/models/activitypub/actor.ts
+++ b/server/models/activitypub/actor.ts
@@ -44,7 +44,8 @@ import {
   MActorFull,
   MActorHost,
   MActorServer,
-  MActorSummaryFormattable
+  MActorSummaryFormattable,
+  MActorWithInboxes
 } from '../../typings/models'
 import * as Bluebird from 'bluebird'
 
@@ -179,8 +180,8 @@ export class ActorModel extends Model<ActorModel> {
   @Column(DataType.STRING(CONSTRAINTS_FIELDS.ACTORS.URL.max))
   outboxUrl: string
 
-  @AllowNull(false)
-  @Is('ActorSharedInboxUrl', value => throwIfNotValid(value, isActivityPubUrlValid, 'shared inbox url'))
+  @AllowNull(true)
+  @Is('ActorSharedInboxUrl', value => throwIfNotValid(value, isActivityPubUrlValid, 'shared inbox url', true))
   @Column(DataType.STRING(CONSTRAINTS_FIELDS.ACTORS.URL.max))
   sharedInboxUrl: string
 
@@ -402,6 +403,10 @@ export class ActorModel extends Model<ActorModel> {
     })
   }
 
+  getSharedInbox (this: MActorWithInboxes) {
+    return this.sharedInboxUrl || this.inboxUrl
+  }
+
   toFormattedSummaryJSON (this: MActorSummaryFormattable) {
     let avatar: Avatar = null
     if (this.Avatar) {