diff --git a/packages/workspace/src/view/window-view.tsx b/packages/workspace/src/view/window-view.tsx
index c468b084d..65378bc9c 100644
--- a/packages/workspace/src/view/window-view.tsx
+++ b/packages/workspace/src/view/window-view.tsx
@@ -17,7 +17,7 @@ export class WindowView extends PureComponent<{
     if (!initReady) {
       const Loading = engineConfig.get('loadingComponent', BuiltinLoading);
       return (
-        <div className={`workspace-engine-main 111 ${active ? 'active' : ''}`}>
+        <div className={`workspace-engine-main ${active ? 'active' : ''}`}>
           <Loading />
         </div>
       );