diff --git a/src/middleware.js b/src/middleware.js
index b66cc85d..1062dfb7 100644
--- a/src/middleware.js
+++ b/src/middleware.js
@@ -17,7 +17,8 @@ import {
 import packageJson from '../package.json';
 import datalayer from './datalayer';
 
-const { API_KEY, READ_ONLY, IS_GOVERNANCE_BODY } = getConfig().APP;
+const { API_KEY, READ_ONLY, IS_GOVERNANCE_BODY, USE_SIMULATOR } =
+  getConfig().APP;
 
 const headerKeys = Object.freeze({
   API_VERSION_HEADER_KEY: 'x-api-version',
@@ -102,7 +103,12 @@ app.use(function (req, res, next) {
 });
 
 app.use(async function (req, res, next) {
-  res.setHeader(headerKeys.WALLET_SYNCED, await datalayer.walletIsSynced());
+  if (USE_SIMULATOR) {
+    res.setHeader(headerKeys.WALLET_SYNCED, true);
+  } else {
+    res.setHeader(headerKeys.WALLET_SYNCED, await datalayer.walletIsSynced());
+  }
+
   next();
 });