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 e975e45..06c671b 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
@@ -26,7 +26,7 @@ const invalids = [
   ],
   [
     'const foo = <K, T extends Boolean>(as: string, bar: number): Omit<T, K> => as + bar',
-    'function foo <K, T extends Boolean>(as: string, bar: number): Omit<T, K> { return as + bar }',
+    'function foo <K, T extends Boolean>(as: string, bar: number): Omit<T, K> {\n  return as + bar\n}',
   ],
   [
     'export const foo = () => {}',
@@ -34,11 +34,11 @@ const invalids = [
   ],
   [
     'export const foo = () => ({})',
-    'export function foo () { return {} }',
+    'export function foo () {\n  return {}\n}',
   ],
   [
     'export const foo = async () => ({})',
-    'export async function foo () { return {} }',
+    'export async function foo () {\n  return {}\n}',
   ],
 ]
 
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 0986f4a..601c1fc 100644
--- a/packages/eslint-plugin-antfu/src/rules/top-level-function.ts
+++ b/packages/eslint-plugin-antfu/src/rules/top-level-function.ts
@@ -60,7 +60,7 @@ export default createEslintRule<Options, MessageIds>({
               : ''
             const textBody = body.type === 'BlockStatement'
               ? code.slice(body.range[0], body.range[1])
-              : `{ return ${code.slice(body.range[0], body.range[1])} }`
+              : `{\n  return ${code.slice(body.range[0], body.range[1])}\n}`
             const textGeneric = arrowFn.typeParameters
               ? code.slice(arrowFn.typeParameters.range[0], arrowFn.typeParameters.range[1])
               : ''