diff --git a/src/api/posts.js b/src/api/posts.js
index dbdec5817d..a7111e0c22 100644
--- a/src/api/posts.js
+++ b/src/api/posts.js
@@ -322,9 +322,11 @@ postsAPI.move = async function (caller, data) {
 	if (!postDeleted && !topicDeleted) {
 		socketHelpers.sendNotificationToPostOwner(data.pid, caller.uid, 'move', 'notifications:moved-your-post');
 
-		// ideally we should federate a "move" activity instead. tbd
-		const { activity } = await activitypub.mocks.activities.create(data.pid, caller.uid);
-		await activitypub.feps.announce(data.pid, activity);
+		// ideally we should federate a "move" activity instead, then can capture remote posts too. tbd
+		if (utils.isNumber(data.pid)) {
+			const { activity } = await activitypub.mocks.activities.create(data.pid, caller.uid);
+			await activitypub.feps.announce(data.pid, activity);
+		}
 	}
 };