diff --git a/src/rollup/config.ts b/src/rollup/config.ts
index 755b8e8b7b..e34dca77d7 100644
--- a/src/rollup/config.ts
+++ b/src/rollup/config.ts
@@ -250,7 +250,7 @@ export const getRollupConfig = (nitroContext: NitroContext) => {
 
   // https://github.com/rollup/plugins/tree/master/packages/commonjs
   rollupConfig.plugins.push(commonjs({
-    extensions: extensions.filter(ext => ext !== '.json')
+    requireReturnsDefault: true
   }))
 
   // https://github.com/rollup/plugins/tree/master/packages/json