From a45f6f9c4cd1014202dd4900051068d87c836cbb Mon Sep 17 00:00:00 2001
From: Julian Lam <julian@nodebb.org>
Date: Wed, 15 Oct 2025 12:24:42 -0400
Subject: [PATCH] fix: update getPrivateKey to send application actor key when
 cid 0

---
 src/activitypub/index.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/activitypub/index.js b/src/activitypub/index.js
index 5971c69326..7b84148600 100644
--- a/src/activitypub/index.js
+++ b/src/activitypub/index.js
@@ -201,7 +201,7 @@ ActivityPub.getPrivateKey = async (type, id) => {
 	if (type === 'uid') {
 		keyId = `${nconf.get('url')}${id > 0 ? `/uid/${id}` : '/actor'}#key`;
 	} else {
-		keyId = `${nconf.get('url')}/category/${id}#key`;
+		keyId = `${nconf.get('url')}${id > 0 ? `/category/${id}` : '/actor'}#key`;
 	}
 
 	return { key: privateKey, keyId };