diff --git a/src/activitypub/contexts.js b/src/activitypub/contexts.js
index 9b88104a38..8335ae7cc4 100644
--- a/src/activitypub/contexts.js
+++ b/src/activitypub/contexts.js
@@ -124,7 +124,7 @@ async function parseString(uid, item) {
 	const { type, id } = await activitypub.helpers.resolveLocalId(item);
 	const pid = type === 'post' && id ? id : item;
 	const postData = await posts.getPostData(pid);
-	if (postData) {
+	if (postData && postData.pid) {
 		// Already cached
 		return postData;
 	}
@@ -157,7 +157,7 @@ async function parseItem(uid, item) {
 	const { type, id } = await activitypub.helpers.resolveLocalId(item.id);
 	const pid = type === 'post' && id ? id : item.id;
 	const postData = await posts.getPostData(pid);
-	if (postData) {
+	if (postData && postData.pid) {
 		// Already cached
 		return postData;
 	}
diff --git a/src/activitypub/notes.js b/src/activitypub/notes.js
index 12b72494b8..56c1776318 100644
--- a/src/activitypub/notes.js
+++ b/src/activitypub/notes.js
@@ -536,7 +536,7 @@ Notes.getParentChain = async (uid, input) => {
 		}
 
 		const postData = await posts.getPostData(id);
-		if (postData) {
+		if (postData && postData.pid) {
 			chain.add(postData);
 			if (postData.toPid) {
 				await traverse(uid, postData.toPid);