diff --git a/packages/e2e-test/src/commands/runCommand.ts b/packages/e2e-test/src/commands/runCommand.ts
index 14cc2f8320..40aa8a75bd 100644
--- a/packages/e2e-test/src/commands/runCommand.ts
+++ b/packages/e2e-test/src/commands/runCommand.ts
@@ -436,6 +436,7 @@ async function switchToReact17(appDir: string) {
     `import '@backstage/cli/asset-types';
 import ReactDOM from 'react-dom';
 import App from './App';
+import '@backstage/ui/css/styles.css';
 
 ReactDOM.render(App.createRoot(), document.getElementById('root'));
 `,