diff --git a/packages/eslint-plugin-antfu/src/rules/top-level-function.test.ts b/packages/eslint-plugin-antfu/src/rules/top-level-function.test.ts
index c4b917a..e975e45 100644
--- a/packages/eslint-plugin-antfu/src/rules/top-level-function.test.ts
+++ b/packages/eslint-plugin-antfu/src/rules/top-level-function.test.ts
@@ -36,6 +36,10 @@ const invalids = [
     'export const foo = () => ({})',
     'export function foo () { return {} }',
   ],
+  [
+    'export const foo = async () => ({})',
+    'export async function foo () { return {} }',
+  ],
 ]
 
 it('runs', () => {
diff --git a/packages/eslint-plugin-antfu/src/rules/top-level-function.ts b/packages/eslint-plugin-antfu/src/rules/top-level-function.ts
index 9a5056e..0986f4a 100644
--- a/packages/eslint-plugin-antfu/src/rules/top-level-function.ts
+++ b/packages/eslint-plugin-antfu/src/rules/top-level-function.ts
@@ -67,12 +67,14 @@ export default createEslintRule<Options, MessageIds>({
             const textTypeReturn = arrowFn.returnType
               ? code.slice(arrowFn.returnType.range[0], arrowFn.returnType.range[1])
               : ''
-            const text = `function ${textName} ${textGeneric}(${textArgs})${textTypeReturn} ${textBody}`
+            const textAsync = arrowFn.async ? 'async ' : ''
+
+            const final = `${textAsync}function ${textName} ${textGeneric}(${textArgs})${textTypeReturn} ${textBody}`
             // console.log({
             //   input: code.slice(node.range[0], node.range[1]),
-            //   output: text,
+            //   output: final,
             // })
-            return fixer.replaceTextRange([node.range[0], node.range[1]], text)
+            return fixer.replaceTextRange([node.range[0], node.range[1]], final)
           },
         })
       },