diff --git a/packages/next/src/server/typescript/rules/metadata.ts b/packages/next/src/server/typescript/rules/metadata.ts
index 5824fac72d..5fda52bfb5 100644
--- a/packages/next/src/server/typescript/rules/metadata.ts
+++ b/packages/next/src/server/typescript/rules/metadata.ts
@@ -158,7 +158,10 @@ function updateVirtualFileWithType(
   if (ts.isFunctionDeclaration(node)) {
     if (isGenerateMetadata) {
       nodeEnd = node.body!.getFullStart()
-      annotation = TYPE_ANOTATION_ASYNC
+      const isAsync = node.modifiers?.some(
+        (m) => m.kind === ts.SyntaxKind.AsyncKeyword
+      )
+      annotation = isAsync ? TYPE_ANOTATION_ASYNC : TYPE_ANOTATION
     } else {
       return
     }
diff --git a/test/e2e/app-dir/metadata/app/type-checking/generate-async/page.tsx b/test/e2e/app-dir/metadata/app/type-checking/generate-async/page.tsx
new file mode 100644
index 0000000000..d17bc146fd
--- /dev/null
+++ b/test/e2e/app-dir/metadata/app/type-checking/generate-async/page.tsx
@@ -0,0 +1,9 @@
+export default function Page() {
+  return null
+}
+
+export async function generateMetadata() {
+  return {
+    title: 'foo',
+  }
+}
diff --git a/test/e2e/app-dir/metadata/app/type-checking/generate-sync/page.tsx b/test/e2e/app-dir/metadata/app/type-checking/generate-sync/page.tsx
new file mode 100644
index 0000000000..99eb4f999c
--- /dev/null
+++ b/test/e2e/app-dir/metadata/app/type-checking/generate-sync/page.tsx
@@ -0,0 +1,9 @@
+export default function Page() {
+  return null
+}
+
+export function generateMetadata() {
+  return {
+    title: 'foo',
+  }
+}