diff --git a/src/controllers/activitypub/index.js b/src/controllers/activitypub/index.js
index e9b922df8a..b110b9d80b 100644
--- a/src/controllers/activitypub/index.js
+++ b/src/controllers/activitypub/index.js
@@ -113,7 +113,7 @@ Controller.getInbox = async (req, res) => {
 Controller.postInbox = async (req, res) => {
 	// Note: underlying methods are internal use only, hence no exposure via src/api
 	const method = String(req.body.type).toLowerCase();
-	if (req.body.hasOwnProperty(method)) {
+	if (!activitypub.inbox.hasOwnProperty(method)) {
 		return res.sendStatus(501);
 	}