diff --git a/src/server/handlers/manifest-handler.ts b/src/server/handlers/manifest-handler.ts
index 55c7b64f..6858cffd 100644
--- a/src/server/handlers/manifest-handler.ts
+++ b/src/server/handlers/manifest-handler.ts
@@ -1,6 +1,6 @@
 import type { Request, Response } from "express";
 import { LemmyHttp } from "lemmy-js-client";
-import { getHttpBaseInternal } from "../../shared/env";
+import { getHttpBaseExternal, getHttpBaseInternal } from "../../shared/env";
 import { wrapClient } from "../../shared/services/HttpService";
 import generateManifestJson from "../utils/generate-manifest-json";
 import { setForwardedHeaders } from "../utils/set-forwarded-headers";
@@ -9,7 +9,7 @@ let manifest: Awaited<ReturnType<typeof generateManifestJson>> | undefined =
   undefined;
 
 export default async (req: Request, res: Response) => {
-  if (!manifest) {
+  if (!manifest || manifest.start_url !== getHttpBaseExternal()) {
     const headers = setForwardedHeaders(req.headers);
     const client = wrapClient(
       new LemmyHttp(getHttpBaseInternal(), { fetchFunction: fetch, headers })