diff --git a/routers/api/v1/activitypub/ticket.go b/routers/api/v1/activitypub/ticket.go
index dd033f27a..81cc2a53c 100644
--- a/routers/api/v1/activitypub/ticket.go
+++ b/routers/api/v1/activitypub/ticket.go
@@ -87,5 +87,9 @@ func Ticket(ctx *context.APIContext) {
 		return
 	}
 
+	if issue.IsClosed {
+		ticket.IsResolved = true
+	}
+
 	response(ctx, ticket)
 }