diff --git a/api/@ohos.application.WindowExtensionAbility.d.ts b/api/@ohos.application.WindowExtensionAbility.d.ts
index 32ccd9c0e805d90d124fdc20c0861b3a04c3ea48..3772be6cb367332bf0acf6fddbfd632c8c5d56b7 100644
--- a/api/@ohos.application.WindowExtensionAbility.d.ts
+++ b/api/@ohos.application.WindowExtensionAbility.d.ts
@@ -32,7 +32,7 @@ import window from './@ohos.window';
  * @since arkts {'1.1':'9', '1.2':'20'}
  * @arkts 1.1&1.2
  */
-declare class WindowExtensionAbility {
+export default class WindowExtensionAbility {
   /**
    * Indicates window extension ability context.
    *
@@ -82,8 +82,6 @@ declare class WindowExtensionAbility {
   onWindowReady(window: window.Window): void;
 }
 
-export default WindowExtensionAbility;
-
 /**
  * The context of window extension. It allows access to
  * windowExtension-specific resources.
diff --git a/api/application/WindowExtensionContext.d.ts b/api/application/WindowExtensionContext.d.ts
index 014d9bf229221481a267c40bc909c2a293b32d9b..e9b5f2cdef86aa9018517beed571bdd1f007c84f 100644
--- a/api/application/WindowExtensionContext.d.ts
+++ b/api/application/WindowExtensionContext.d.ts
@@ -39,7 +39,7 @@ import StartOptions from '../@ohos.app.ability.StartOptions';
  * @since arkts {'1.1':'9', '1.2':'20'}
  * @arkts 1.1&1.2
  */
-declare class WindowExtensionContext extends ExtensionContext {
+export default class WindowExtensionContext extends ExtensionContext {
   /**
    * Window extension uses this method to start a specific ability.
    *
@@ -100,4 +100,3 @@ declare class WindowExtensionContext extends ExtensionContext {
    */
   startAbility(want: Want, options?: StartOptions): Promise<void>;
 }
-export default WindowExtensionContext;
\ No newline at end of file