diff --git a/packages/remix/src/executors/build/build.impl.ts b/packages/remix/src/executors/build/build.impl.ts
index 0aff8873dd2f8..8be4c40351f40 100644
--- a/packages/remix/src/executors/build/build.impl.ts
+++ b/packages/remix/src/executors/build/build.impl.ts
@@ -72,7 +72,7 @@ export default async function buildExecutor(
     packageJson.scripts ??= {};
     // Don't override existing custom script since project may have its own server.
     if (!packageJson.scripts.start) {
-      packageJson.scripts['start'] = 'remix-serve ./build';
+      packageJson.scripts['start'] = 'remix-serve ./build/index.js';
     }
 
     updatePackageJson(packageJson, context);