diff --git a/src/core/data/headerItems.js b/src/core/data/headerItems.js
index 76c7292..e134737 100644
--- a/src/core/data/headerItems.js
+++ b/src/core/data/headerItems.js
@@ -2,6 +2,7 @@ import {Button, Link} from "@mui/material";
 
 const headerItems = [
     <Button
+        key="help"
         variant={'contained'}
         color={'warning'}
         size={'small'}