diff --git a/packages/vite-plugin-cloudflare/src/assets.ts b/packages/vite-plugin-cloudflare/src/constants.ts
similarity index 52%
rename from packages/vite-plugin-cloudflare/src/assets.ts
rename to packages/vite-plugin-cloudflare/src/constants.ts
index 669b239ec17c..402ec783fe52 100644
--- a/packages/vite-plugin-cloudflare/src/assets.ts
+++ b/packages/vite-plugin-cloudflare/src/constants.ts
@@ -1,9 +1,3 @@
-import type { Miniflare } from 'miniflare';
-
 export const ROUTER_WORKER_NAME = '__router-worker__';
 export const ASSET_WORKER_NAME = '__asset-worker__';
 export const ASSET_WORKERS_COMPATIBILITY_DATE = '2024-10-04';
-
-export function getRouterWorker(miniflare: Miniflare) {
-	return miniflare.getWorker(ROUTER_WORKER_NAME);
-}
diff --git a/packages/vite-plugin-cloudflare/src/dev.ts b/packages/vite-plugin-cloudflare/src/dev.ts
new file mode 100644
index 000000000000..895acabcb25e
--- /dev/null
+++ b/packages/vite-plugin-cloudflare/src/dev.ts
@@ -0,0 +1,22 @@
+import assert from 'node:assert';
+import { ROUTER_WORKER_NAME } from './constants';
+import type { ResolvedPluginConfig } from './plugin-config';
+import type { Miniflare } from 'miniflare';
+
+export function getDevEntryWorker(
+	resolvedPluginConfig: ResolvedPluginConfig,
+	miniflare: Miniflare,
+) {
+	const entryWorkerConfig =
+		resolvedPluginConfig.type === 'assets-only'
+			? resolvedPluginConfig.config
+			: resolvedPluginConfig.workers[
+					resolvedPluginConfig.entryWorkerEnvironmentName
+				];
+
+	assert(entryWorkerConfig, 'Unexpected error: No entry worker configuration');
+
+	return entryWorkerConfig.assets
+		? miniflare.getWorker(ROUTER_WORKER_NAME)
+		: miniflare.getWorker(entryWorkerConfig.name);
+}
diff --git a/packages/vite-plugin-cloudflare/src/index.ts b/packages/vite-plugin-cloudflare/src/index.ts
index 80366a24fc22..136eec326f77 100644
--- a/packages/vite-plugin-cloudflare/src/index.ts
+++ b/packages/vite-plugin-cloudflare/src/index.ts
@@ -1,14 +1,14 @@
 import assert from 'node:assert';
 import * as fs from 'node:fs';
-import path from 'node:path';
+import * as path from 'node:path';
 import { createMiddleware } from '@hattip/adapter-node';
 import { Miniflare } from 'miniflare';
 import * as vite from 'vite';
-import { getRouterWorker } from './assets';
 import {
 	createCloudflareEnvironmentOptions,
 	initRunners,
 } from './cloudflare-environment';
+import { getDevEntryWorker } from './dev';
 import {
 	getDevMiniflareOptions,
 	getPreviewMiniflareOptions,
@@ -209,21 +209,19 @@ export function cloudflare(pluginConfig: PluginConfig = {}): vite.Plugin {
 			);
 
 			await initRunners(resolvedPluginConfig, viteDevServer, miniflare);
-			const routerWorker = await getRouterWorker(miniflare);
+			const entryWorker = await getDevEntryWorker(
+				resolvedPluginConfig,
+				miniflare,
+			);
 
-			const middleware = createMiddleware(async ({ request }) => {
-				return routerWorker.fetch(toMiniflareRequest(request), {
+			const middleware = createMiddleware(({ request }) => {
+				return entryWorker.fetch(toMiniflareRequest(request), {
 					redirect: 'manual',
 				}) as any;
 			});
 
 			return () => {
 				viteDevServer.middlewares.use((req, res, next) => {
-					if (!middleware) {
-						next();
-						return;
-					}
-
 					middleware(req, res, next);
 				});
 			};
@@ -241,11 +239,6 @@ export function cloudflare(pluginConfig: PluginConfig = {}): vite.Plugin {
 
 			return () => {
 				vitePreviewServer.middlewares.use((req, res, next) => {
-					if (!middleware) {
-						next();
-						return;
-					}
-
 					middleware(req, res, next);
 				});
 			};
diff --git a/packages/vite-plugin-cloudflare/src/miniflare-options.ts b/packages/vite-plugin-cloudflare/src/miniflare-options.ts
index 3a94120410e6..b1112bcd6fd0 100644
--- a/packages/vite-plugin-cloudflare/src/miniflare-options.ts
+++ b/packages/vite-plugin-cloudflare/src/miniflare-options.ts
@@ -13,7 +13,7 @@ import {
 	ASSET_WORKER_NAME,
 	ASSET_WORKERS_COMPATIBILITY_DATE,
 	ROUTER_WORKER_NAME,
-} from './assets';
+} from './constants';
 import type { CloudflareDevEnvironment } from './cloudflare-environment';
 import type {
 	PersistState,