diff --git a/packages/astro/src/vite-plugin-astro-server/index.ts b/packages/astro/src/vite-plugin-astro-server/index.ts
index b718780798..506f54a3fb 100644
--- a/packages/astro/src/vite-plugin-astro-server/index.ts
+++ b/packages/astro/src/vite-plugin-astro-server/index.ts
@@ -194,9 +194,10 @@ async function handleRequest(
 	// When file-based build format is used, pages will be built to `/blog.html`
 	// rather than `/blog/index.html`. The dev server should handle this as well
 	// to match production deployments.
-	const url = config.build.format === 'file'
-		? new URL(origin + req.url?.replace(/(index)?\.html$/, ''))
-		: new URL(origin + req.url);
+	const url =
+		config.build.format === 'file'
+			? new URL(origin + req.url?.replace(/(index)?\.html$/, ''))
+			: new URL(origin + req.url);
 	const pathname = decodeURI(url.pathname);
 	const rootRelativeUrl = pathname.substring(devRoot.length - 1);
 	if (!buildingToSSR) {
diff --git a/packages/astro/test/dev-routing.test.js b/packages/astro/test/dev-routing.test.js
index de765a1830..13ea4d12fe 100644
--- a/packages/astro/test/dev-routing.test.js
+++ b/packages/astro/test/dev-routing.test.js
@@ -289,7 +289,7 @@ describe('Development Routing', () => {
 			const response = await fixture.fetch('/1.html');
 			expect(response.status).to.equal(200);
 		});
-		
+
 		it('200 when loading /1', async () => {
 			const response = await fixture.fetch('/1');
 			expect(response.status).to.equal(200);