diff --git a/api/@ohos.application.Ability.d.ts b/api/@ohos.application.Ability.d.ts
index 90e2439bb238354def06438ab94389f2d615a28c..65963be527b5e0901076ed6d413728e4407f4a79 100755
--- a/api/@ohos.application.Ability.d.ts
+++ b/api/@ohos.application.Ability.d.ts
@@ -37,7 +37,7 @@ import rpc from '/@ohos.rpc';
      * @sysCap AAFwk
      * @StageModelOnly
      */
-     call(method, data: rpc.Sequenceable): Promise<void>;
+     call(method: string, data: rpc.Sequenceable): Promise<void>;
 
     /**
      * Notify the server of Sequenceable type data and return the notification result.