diff --git a/Model/ReportGenerator.php b/Model/ReportGenerator.php
index 866bd18..b93889f 100644
--- a/Model/ReportGenerator.php
+++ b/Model/ReportGenerator.php
@@ -73,20 +73,20 @@ class ReportGenerator
         $statusPlaceholders = implode(',', array_fill(0, count($orderStatuses), '?'));
 
         $sql = "
-        SELECT 
+        SELECT
             DATE_FORMAT(o.created_at, '%m/%d/%Y') AS 'Date',
-            oi.sku AS 'Vendor Product number',
+            oi.sku AS 'Vendor_product_number',
             oi.name AS 'Description',
-            '' AS 'Vendor code',
-            '' AS 'Vendor name',
-            o.increment_id AS 'Dealer product number',
-            CASE 
+            '' AS 'Vendor_code',
+            '' AS 'Vendor_name',
+            o.increment_id AS 'Dealer_product_number',
+            CASE
                 WHEN sa.country_id = 'US' THEN 'United States'
                 ELSE sa.country_id
             END AS 'Country',
             sa.city AS 'City',
             sa.region AS 'State',
-            sa.postcode AS 'Zip code',
+            sa.postcode AS 'Zip_code',
             CAST(oi.qty_ordered AS UNSIGNED) AS 'Quantity',
             COALESCE(
                 NULLIF(oi.base_cost, 0),