diff --git a/platform/viewer/src/App.js b/platform/viewer/src/App.js
index d20504700..30585345d 100644
--- a/platform/viewer/src/App.js
+++ b/platform/viewer/src/App.js
@@ -83,7 +83,7 @@ class App extends Component {
   constructor(props) {
     super(props);
 
-    this.appConfig = props;
+    this._appConfig = props;
     const { servers, extensions, hotkeys, oidc } = props;
 
     this.initUserManager(oidc);