diff --git a/libs/components/layout/src/header/LayoutHeader.tsx b/libs/components/layout/src/header/LayoutHeader.tsx
index 509df650ed..51650d28d8 100644
--- a/libs/components/layout/src/header/LayoutHeader.tsx
+++ b/libs/components/layout/src/header/LayoutHeader.tsx
@@ -37,6 +37,7 @@ export const LayoutHeader = () => {
                 observer.disconnect();
             };
         }
+        return undefined;
     }, [rootEle]);
 
     const warningTips = useMemo(() => {