diff --git a/frontend/src/shared/ui/components/KsDataGrid.vue b/frontend/src/shared/ui/components/KsDataGrid.vue
index 161b7308..7e1e2d2c 100644
--- a/frontend/src/shared/ui/components/KsDataGrid.vue
+++ b/frontend/src/shared/ui/components/KsDataGrid.vue
@@ -23,7 +23,7 @@ const columnDefs = computed<ColDef[]>(() => {
   if (props.showRowNumber) {
     const rowNumCol: ColDef = {
       headerName: 'No.',
-      valueGetter: 'node.rowIndex + 1',
+      valueGetter: params => (params.node?.rowIndex !== null && params.node?.rowIndex !== undefined) ? params.node.rowIndex + 1 : '',
       width: 54,
       minWidth: 50,
       maxWidth: 65,