diff --git a/src/core/server.ts b/src/core/server.ts
index 0ebe0d28a..b58f3ba41 100644
--- a/src/core/server.ts
+++ b/src/core/server.ts
@@ -39,7 +39,7 @@ export async function startServer(options: StartServerOptions = {}) {
     for (let i = 0; i < 150; i++) {
       await new Promise(resolve => setTimeout(resolve, 100))
       try {
-        const res = await $fetch(ctx.nuxt!.options.app.baseURL)
+        const res = await $fetch<string>(ctx.nuxt!.options.app.baseURL, { responseType: 'text' })
         if (!res.includes('__NUXT_LOADING__')) {
           return
         }