diff --git a/index.js b/index.js
index 320a12ce..0e3f5f4d 100644
--- a/index.js
+++ b/index.js
@@ -46,7 +46,7 @@ if (module.hot) {
 export default $2;
 `;
 
-	return code.replace(/(export default ([^;]*));/, replacement);
+	return code.replace(/(export default ([^;]*));/, () => replacement);
 }
 
 function posixify(file) {