diff --git a/packages/plugin-legacy/src/index.ts b/packages/plugin-legacy/src/index.ts
index eb5dbb0752756f..4fcdb2c11ddc16 100644
--- a/packages/plugin-legacy/src/index.ts
+++ b/packages/plugin-legacy/src/index.ts
@@ -630,6 +630,7 @@ export async function detectPolyfills(
     ast: true,
     babelrc: false,
     configFile: false,
+    compact: false,
     presets: [
       [
         (await import('@babel/preset-env')).default,