diff --git a/packages/react/test/apps/react18/vite.config.ts b/packages/react/test/apps/react18/vite.config.ts
index 2fda2d9f29..0690e3f397 100644
--- a/packages/react/test/apps/react18/vite.config.ts
+++ b/packages/react/test/apps/react18/vite.config.ts
@@ -23,5 +23,10 @@ export default defineConfig({
      * include that dependency for optimization.
      */
     include: ['@ionic/react > react-dom']
+  },
+  build: {
+    rollupOptions: {
+      external: ['@stencil/core'],
+    }
   }
 })