diff --git a/packages/vite/src/node/config.ts b/packages/vite/src/node/config.ts
index 72dc882973fa30..f3f634420919d4 100644
--- a/packages/vite/src/node/config.ts
+++ b/packages/vite/src/node/config.ts
@@ -1058,7 +1058,7 @@ async function bundleConfigFile(
         name: 'inject-file-scope-variables',
         setup(build) {
           build.onLoad({ filter: /\.[cm]?[jt]s$/ }, async (args) => {
-            const contents = await fs.promises.readFile(args.path, 'utf8')
+            const contents = await fsp.readFile(args.path, 'utf8')
             const injectValues =
               `const ${dirnameVarName} = ${JSON.stringify(
                 path.dirname(args.path),