diff --git a/lib/generate/activitypub.ts b/lib/generate/activitypub.ts
index 87a931a..57c9dcd 100644
--- a/lib/generate/activitypub.ts
+++ b/lib/generate/activitypub.ts
@@ -1,3 +1,4 @@
+import path from "path";
 import { Page, PostMetadata } from "../metadata";
 import * as util from "../util";
 
@@ -6,7 +7,14 @@ const baseURL = process.env.BASE_URL || "shadowfacts.net";
 export default async function activitypub(posts: Page[]) {
 	for (const post of posts) {
 		const object = postObject(post);
-		util.write(`ap/posts/${post.metadata.permalink}.json`, JSON.stringify(object));
+		const dir = path.dirname(post.metadata.permalink);
+		const base = path.basename(post.metadata.permalink);
+		const dest = path.format({
+			dir,
+			name: base,
+			ext: ".json"
+		});
+		util.write(dest, JSON.stringify(object));
 	}
 
 	util.write("ap/actor", JSON.stringify(actorObject()))