diff --git a/.changeset/funny-seahorses-compare.md b/.changeset/funny-seahorses-compare.md
new file mode 100644
index 000000000000..4ae565a82490
--- /dev/null
+++ b/.changeset/funny-seahorses-compare.md
@@ -0,0 +1,6 @@
+---
+'astro': patch
+'@astrojs/deno': patch
+---
+
+Deno SSR with prerender=true complains about invalid URL scheme
diff --git a/packages/astro/src/core/build/plugins/plugin-ssr.ts b/packages/astro/src/core/build/plugins/plugin-ssr.ts
index d4536b92c8ab..58548c0bb677 100644
--- a/packages/astro/src/core/build/plugins/plugin-ssr.ts
+++ b/packages/astro/src/core/build/plugins/plugin-ssr.ts
@@ -36,7 +36,7 @@ export function vitePluginSSR(internals: BuildInternals, adapter: AstroAdapter):
 		},
 		load(id) {
 			if (id === resolvedVirtualModuleId) {
-				return `import * as adapter from '${adapter.serverEntrypoint}';
+				return `import * as _adapter from '${adapter.serverEntrypoint}';
 import * as _main from '${pagesVirtualModuleId}';
 import { deserializeManifest as _deserializeManifest } from 'astro/app';
 const _manifest = Object.assign(_deserializeManifest('${manifestReplace}'), {
@@ -47,7 +47,7 @@ const _args = ${adapter.args ? JSON.stringify(adapter.args) : 'undefined'};
 export * from '${pagesVirtualModuleId}';
 ${
 	adapter.exports
-		? `const _exports = adapter.createExports(_manifest, _args);
+		? `const _exports = _adapter.createExports(_manifest, _args);
 ${adapter.exports
 	.map((name) => {
 		if (name === 'default') {
@@ -61,11 +61,13 @@ export { _default as default };`;
 `
 		: ''
 }
+export const adapter = _adapter
+${adapter.name !== '@astrojs/deno' ? `
 const _start = 'start';
-if(_start in adapter) {
-	adapter[_start](_manifest, _args);
-}`;
-			}
+if(_start in _adapter) {
+	_adapter[_start](_manifest, _args);
+}`: ''}`;
+		}
 			return void 0;
 		},
 		async generateBundle(_opts, bundle) {
diff --git a/packages/integrations/deno/src/code-constant.ts b/packages/integrations/deno/src/code-constant.ts
new file mode 100644
index 000000000000..bf272e397080
--- /dev/null
+++ b/packages/integrations/deno/src/code-constant.ts
@@ -0,0 +1,2 @@
+export const DEFAULTIMPORT = `import { Server } from "https://deno.land/std@0.167.0/http/server.ts"; \n import { fetch } from "https://deno.land/x/file_fetch/mod.ts";\nimport { fileExtension } from "https://deno.land/x/file_extension@v2.1.0/mod.ts";`
+export const DEFAULTSTART = `const _start = 'start'; \n if(_start in adapter) { \nadapter[_start](_manifest, _args);}`
diff --git a/packages/integrations/deno/src/index.ts b/packages/integrations/deno/src/index.ts
index 82da151888cd..891623ead537 100644
--- a/packages/integrations/deno/src/index.ts
+++ b/packages/integrations/deno/src/index.ts
@@ -3,6 +3,7 @@ import esbuild from 'esbuild';
 import * as fs from 'fs';
 import * as npath from 'path';
 import { fileURLToPath } from 'url';
+import * as CONSTANT from './code-constant'
 
 interface BuildConfig {
 	server: URL;
@@ -70,6 +71,8 @@ export default function createIntegration(args?: Options): AstroIntegration {
 			'astro:build:done': async () => {
 				const entryUrl = new URL(_buildConfig.serverEntry, _buildConfig.server);
 				const pth = fileURLToPath(entryUrl);
+				const content = await fs.readFileSync(pth, 'utf8')
+				await fs.writeFileSync(pth, `${CONSTANT.DEFAULTIMPORT}${content}${CONSTANT.DEFAULTSTART}`);
 				await esbuild.build({
 					target: 'es2020',
 					platform: 'browser',
diff --git a/packages/integrations/deno/src/server.ts b/packages/integrations/deno/src/server.ts
index 00e1c43db5cf..ed358f2f09dc 100644
--- a/packages/integrations/deno/src/server.ts
+++ b/packages/integrations/deno/src/server.ts
@@ -1,10 +1,7 @@
 // Normal Imports
 import type { SSRManifest } from 'astro';
 import { App } from 'astro/app';
-// @ts-ignore
-import { Server } from 'https://deno.land/std@0.167.0/http/server.ts';
-// @ts-ignore
-import { fetch } from 'https://deno.land/x/file_fetch/mod.ts';
+
 
 interface Options {
 	port?: number;
@@ -12,6 +9,7 @@ interface Options {
 	start?: boolean;
 }
 
+// @ts-ignore
 let _server: Server | undefined = undefined;
 let _startPromise: Promise<void> | undefined = undefined;
 
@@ -39,8 +37,19 @@ export function start(manifest: SSRManifest, options: Options) {
 		// try to fetch a static file instead
 		const url = new URL(request.url);
 		const localPath = new URL('./' + app.removeBase(url.pathname), clientRoot);
-		const fileResp = await fetch(localPath.toString());
-
+		const stringLocalPath = localPath.toString();
+		// @ts-ignore
+		const extendName = fileExtension(stringLocalPath);
+		const fileResp = await fetch(
+			!extendName
+				? `${
+						stringLocalPath.endsWith('/')
+							? `${stringLocalPath}index.html`
+							: `${stringLocalPath}/index.html`
+				  }`
+				: stringLocalPath
+		);
+		
 		// If the static file can't be found
 		if (fileResp.status == 404) {
 			// Render the astro custom 404 page
@@ -60,6 +69,7 @@ export function start(manifest: SSRManifest, options: Options) {
 	};
 
 	const port = options.port ?? 8085;
+	// @ts-ignore
 	_server = new Server({
 		port,
 		hostname: options.hostname ?? '0.0.0.0',
diff --git a/packages/integrations/deno/test/basics.test.ts b/packages/integrations/deno/test/basics.test.ts
index d1f8907cb3c7..e61dbd3f7a35 100644
--- a/packages/integrations/deno/test/basics.test.ts
+++ b/packages/integrations/deno/test/basics.test.ts
@@ -143,3 +143,24 @@ Deno.test({
 	sanitizeResources: false,
 	sanitizeOps: false,
 });
+
+Deno.test({
+	name: 'perendering',
+	permissions: defaultTestPermissions,
+	async fn() {
+		await startApp(async (baseUrl: URL) => {
+			const resp = await fetch(new URL('perendering', baseUrl));
+			assertEquals(resp.status, 200);
+
+
+			const html = await resp.text();
+			assert(html);
+
+			const doc = new DOMParser().parseFromString(html, `text/html`);
+			const h1 = doc!.querySelector('h1');
+			assertEquals(h1!.innerText, 'test');
+		});
+	},
+	sanitizeResources: false,
+	sanitizeOps: false,
+});
diff --git a/packages/integrations/deno/test/fixtures/basics/src/pages/perendering.astro b/packages/integrations/deno/test/fixtures/basics/src/pages/perendering.astro
new file mode 100644
index 000000000000..ca317d38d296
--- /dev/null
+++ b/packages/integrations/deno/test/fixtures/basics/src/pages/perendering.astro
@@ -0,0 +1,9 @@
+---
+export const prerender = true; 
+---
+
+<html>
+<body>
+	<h1>test</h1>
+</body>
+</html>