diff --git a/scripts/babel-register.js b/scripts/babel-register.js
index 3c29cf6ec483..aae4caa1b49b 100644
--- a/scripts/babel-register.js
+++ b/scripts/babel-register.js
@@ -16,7 +16,8 @@ if (babel.plugins) {
 register(babel);
 register({
   extensions: [".js"],
-  only: 'packages/*/test',
+  // Only js files in the test folder but not in the subfolder fixtures.
+  only: /packages\/.+\/test\/(?!fixtures\/).+\.js$/,
   babelrc: false,
   compact: true,
 });