diff --git a/samples/grids/tree-grid/row-pinning-extra-column.json b/samples/grids/tree-grid/row-pinning-extra-column.json
index 2089eac5..ef774e40 100644
--- a/samples/grids/tree-grid/row-pinning-extra-column.json
+++ b/samples/grids/tree-grid/row-pinning-extra-column.json
@@ -13,7 +13,8 @@
       "cellSelection": "None",
       "pinning": {
         "type": "WebPinningConfig",
-        "rows": "Top"
+        "rows": "Top",
+        "columns": "End"
       },
       "columnList": [
         {