diff --git a/app/layout.tsx b/app/layout.tsx
index 39439c83..a83a2082 100644
--- a/app/layout.tsx
+++ b/app/layout.tsx
@@ -8,8 +8,10 @@ export default function RootLayout({
 }) {
   return (
     <html lang="en">
-      App folder
-      <body>{children}</body>
+      <body>
+        <h1>App root layout</h1>
+        {children}
+      </body>
     </html>
   )
 }
diff --git a/app/not-found.tsx b/app/not-found.tsx
new file mode 100644
index 00000000..e6d28e88
--- /dev/null
+++ b/app/not-found.tsx
@@ -0,0 +1,11 @@
+import Link from '../src/components/Link'
+
+export default function NotFound() {
+  return (
+    <div>
+      <h2>Not Found</h2>
+      <p>Could not find requested resource</p>
+      <Link href="/">Return Home</Link>
+    </div>
+  )
+}
diff --git a/tsconfig.json b/tsconfig.json
index f58feae4..175fff69 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -19,7 +19,6 @@
     "resolveJsonModule": true,
     "isolatedModules": true,
     "jsx": "preserve",
-    "jsxImportSource": "@emotion/react",
     "plugins": [
       {
         "name": "next"
