diff --git a/packages/astro/test/fixtures/ssr-api-route/astro.config.mjs b/packages/astro/test/fixtures/ssr-api-route/astro.config.mjs
index ef9763e01..ebed13047 100644
--- a/packages/astro/test/fixtures/ssr-api-route/astro.config.mjs
+++ b/packages/astro/test/fixtures/ssr-api-route/astro.config.mjs
@@ -4,5 +4,5 @@ import node from '@astrojs/node';
 // https://astro.build/config
 export default defineConfig({
 	output: 'server',
-	adapter: node(),
+	adapter: node({ mode: 'standalone' }),
 });