diff --git a/App.tsx b/App.tsx
index 29927f3..2cdc5a7 100644
--- a/App.tsx
+++ b/App.tsx
@@ -68,7 +68,7 @@ export default class App extends Component<AppProps, WalletmanAppState> {
     async componentDidMount() {
         await this.setupPermissions();
 
-        this.echoSub = onProxyMessage((msg) => {
+        this.onProxyMessageSub = onProxyMessage((msg) => {
             if (msg.type === 'echo') {
                 Alert.alert('Echo 回来了', JSON.stringify(msg.data));
             }
@@ -90,12 +90,12 @@ export default class App extends Component<AppProps, WalletmanAppState> {
         this.appStateSubscription = AppState.addEventListener('change', this.handleAppStateChange);
     }
 
-    private echoSub?: ReturnType<typeof onProxyMessage>;
+    private onProxyMessageSub?: ReturnType<typeof onProxyMessage>;
 
     componentWillUnmount() {
         this.stopProxyClient();
         stopSmsListener();
-        this.echoSub?.remove();
+        this.onProxyMessageSub?.remove();
     }
 
     sendEcho = () => {