diff --git a/bin/configure-fastly.js b/bin/configure-fastly.js
index e7a7ffa20..d1a4d89dc 100644
--- a/bin/configure-fastly.js
+++ b/bin/configure-fastly.js
@@ -23,7 +23,7 @@ const routeJsonPreProcessed = routeJson.map(
     route => {
         if (route.redirect) {
             process.stdout.write(`Updating: ${route.redirect} to `);
-            route.redirect.replace('RADISH_URL', RADISH_URL);
+            route.redirect = route.redirect.replace('RADISH_URL', RADISH_URL);
             process.stdout.write(`${route.redirect}\n`);
         }
         return route;