diff --git a/apps/link/next.config.js b/apps/link/next.config.js
index c2b2767..e81b7bc 100644
--- a/apps/link/next.config.js
+++ b/apps/link/next.config.js
@@ -2,10 +2,10 @@
 const nextConfig = {
   reactStrictMode: true,
   publicRuntimeConfig: {
-    linkURL: process.env.LINK_URL,
-    leafcutterURL: process.env.LEAFCUTTER_URL,
-    metamigoURL: process.env.METAMIGO_URL,
-    muiLicenseKey: process.env.MUI_LICENSE_KEY,
+    linkURL: process.env.LINK_URL ?? "http://localhost:3000",
+    leafcutterURL: process.env.LEAFCUTTER_URL ?? "http://localhost:3001",
+    metamigoURL: process.env.METAMIGO_URL ?? "http://localhost:3002",
+    muiLicenseKey: process.env.MUI_LICENSE_KEY ?? "",
   },
   async rewrites() {
     return {