diff --git a/tests/storybook/.storybook/main.ts b/tests/storybook/.storybook/main.ts
index 7a2195f5a..2e33a0028 100644
--- a/tests/storybook/.storybook/main.ts
+++ b/tests/storybook/.storybook/main.ts
@@ -51,7 +51,7 @@ export default {
         }),
       ],
       define: {
-        'process.on': '(() => void 0)',
+        'process.on': 'undefined',
         'process.env': {},
         'process.env.COVERAGE': JSON.stringify(!!process.env.COVERAGE),
         'process.env.SHOULD_REPORT_TRACE': `${Boolean(