diff --git a/packages/astro/test/units/vite-plugin-astro-server/response.test.js b/packages/astro/test/units/vite-plugin-astro-server/response.test.js
index 780a725f50..a47769556e 100644
--- a/packages/astro/test/units/vite-plugin-astro-server/response.test.js
+++ b/packages/astro/test/units/vite-plugin-astro-server/response.test.js
@@ -54,7 +54,7 @@ describe('endpoints', () => {
 		await done;
 		const headers = res.getHeaders();
 		expect(headers).to.deep.equal({
-			"access-control-allow-origin": "*",
+			'access-control-allow-origin': '*',
 			'x-single': 'single',
 			'x-triple': 'one, two, three',
 			'set-cookie': ['hello', 'world'],