diff --git a/packages/react-bootstrap-table2-example/examples/row-expand/expand-only-one.js b/packages/react-bootstrap-table2-example/examples/row-expand/expand-only-one.js
index <HASH>..<HASH> 100644
--- a/packages/react-bootstrap-table2-example/examples/row-expand/expand-only-one.js
+++ b/packages/react-bootstrap-table2-example/examples/row-expand/expand-only-one.js
@@ -43,6 +43,7 @@ const columns = [{
 }];
 
 const expandRow = {
+  onlyOneExpanding: true,
   renderer: row => (
     <div>
       <p>{ \`This Expand row is belong to rowKey $\{row.id}\` }</p>
Added missed attribute (#<I>)

You missed 'onlyOneExpanding: true' in the source code.