diff --git a/src/routes/apps.js b/src/routes/apps.js
index eadffc0c1..59785af6c 100644
--- a/src/routes/apps.js
+++ b/src/routes/apps.js
@@ -953,7 +953,7 @@ async function setUpstreamUri(req, res, next) {
     assert.strictEqual(typeof req.body, 'object');
     assert.strictEqual(typeof req.app, 'object');
 
-    if (req.app.appStoreId !== constants.PROXY_APP_APPSTORE_ID) return next(new HttpError(400, 'upstreamUri can only be set for proxy app'));
+    if (req.app.manifest.id !== constants.PROXY_APP_APPSTORE_ID) return next(new HttpError(400, 'upstreamUri can only be set for proxy app'));
     if (typeof req.body.upstreamUri !== 'string') return next(new HttpError(400, 'upstreamUri must be a string'));
 
     const [error] = await safe(apps.setUpstreamUri(req.app, req.body.upstreamUri, AuditSource.fromRequest(req)));