diff --git a/examples/simple_excel_export_01.md b/examples/simple_excel_export_01.md
index e624b4c8..57e6a758 100644
--- a/examples/simple_excel_export_01.md
+++ b/examples/simple_excel_export_01.md
@@ -35,7 +35,7 @@ const dataSet1 = [
     }
 ];
 
-var dataSet2 = [
+const dataSet2 = [
     {
         name: "Johnson",
         total: 25,